LAO
Overview of Special Education Funding Models
Read the report at Legislative Analyst's Office ↗
Overview of Special
Education Funding Models
Summary
Since the 1970s, federal law has required public schools to provide special education services
to students with disabilities that interfere with their ability to learn. Schools in California cover
special education costs through a combination of local unrestricted, state categorical, and
federal categorical funding. Trailer legislation from the 2021-22 budget package specifies that
state special education funds will only be allocated in the 2022-23 budget if statutory changes
designed to improve the academic outcomes of students with disabilities are included in the
budget. These changes may include modifications to the existing funding allocations, clarification
of different roles and responsibilities within the special education system, and expansion of
inclusive practices.
To help inform future discussions, this brief provides an overview of special education models
used by California and other states and provides the Legislature with a framework for evaluating
these models. The brief begins by providing background on the state’s current funding allocation
formula for special education. California provides most special education funding based on
overall student attendance, with roughly 16 percent of state special education funding provided
through other programs based on alternative formulas and/or for specific types of special
education services, including those for students with higher-cost disabilities. The brief also
describes the four primary models used by states to distribute special education funding to
schools—census-based, weighted, reimbursement, and resource-based.
Next, the brief sets forth a simplified framework that describes three key criteria for evaluating
special education funding models: (1) appropriate fiscal incentives, (2) alignment of funding and
costs, and (3) transparency and ease of implementation. These criteria were developed based
on our review of the academic literature. The brief concludes by offering some issues for the
Legislature to consider. Specifically, we note that (1) all funding models have specific strengths
and weaknesses, (2) legislative policy priorities and state context should drive changes to the
funding formula, (3) the state can also make changes within its existing funding system, and
(4) other changes are likely required to address key policy priorities.
GABRIEL PETEK | LEGISLATIVE ANALYST
DECEMBER 2021
AN LAO REPORT
Background Share of California Students Receiving Special
Education Has Increased in Last Decade, Despite
Special Education Supported by Combination
Declining Student Attendance. The share of
of Local, State, and Federal Funding. Schools
California students receiving special education was
receive billions of dollars each year (mainly as local
virtually flat from 1997-98 through 2007-08, then
general purpose funding from the Local Control
grew notably in subsequent years—increasing from
Funding Formula) to educate all students, including
about 10 percent in 2008-09 to almost 12 percent in
students with disabilities. These funds can be
2019-20. Much of this growth is due to an increasing
used for any educational purpose but primarily
share of students diagnosed with relatively severe
cover general education costs such as teacher
disabilities, most notably autism, which typically
compensation. Beyond these general education
require more costly services. Although the share of
costs, schools incur additional costs to serve
students receiving special education has increased
students with disabilities (for example, to provide
in the past decade, overall statewide student
specialized instructional support and adaptive
attendance has declined every year since 2013-14.
equipment). To help cover these additional costs,
As AB 602 provides funding based on overall
in 2021-22, schools received about $6 billion
student attendance, the formula generally allocates
combined from state and federal categorical
less funding when statewide attendance declines,
funding specifically for special education. These
even if the share of students receiving special
fund sources together cover roughly one-third of
education increases. As a result, schools have
the additional cost of special education services.
reported covering an increasing share of their special
Schools cover remaining special education costs
education expenditures with local general purpose
with their local general purpose funding.
funding.
California Provides Most Special Education
State Has Provided Significant Special
Funding Based on Overall Student Attendance.
Education Base Augmentations in Recent
The state allocates most special education funding
Years. Since 2019-20, the state has increased
(84 percent in 2021-22) through a base rate
special education base funding by almost $1 billion
formula commonly called AB 602 (after its enacting
(30 percent) beyond annual cost-of-living and
legislation). The formula distributes funding
attendance adjustments. The corresponding
based on total student attendance in Transitional
statewide base rate grew from $557 per student
Kindergarten through grade 12— regardless of the
in 2019-20 to $715 per student in 2021-22. These
number of students receiving special education,
augmentations were provided largely due to
the specific disabilities of those students, or
concerns over schools’ growing special education
the types of services those students receive.
costs. In addition to increased base funding, the
Roughly 16 percent of state special education
state also recently funded several work groups and
funding is provided through other programs
studies aimed at reforming different aspects of the
based on alternative formulas and/or for specific
special education system—including improving
types of special education services, including
the state’s special education governance and
those for students with higher-cost disabilities.
accountability system, expanding access to a regular
For instance, the Low-Incidence Disabilities
high school diploma for students with disabilities, and
program allocates funding based on the number
studying placements in nonpublic schools. The final
of students who are deaf, hard of hearing, visually
recommendations from most of these studies were
impaired, or orthopedically impaired. The state
released in fall 2021.
also runs an extraordinary cost pool which
provides reimbursement for very expensive student Currently, Other States Use Various Special
placements in nonpublic schools exclusively serving Education Funding Models. Figure 1 describes
students with disabilities. the four primary models used by states to distribute
special education funding to schools. With the
exception of the census-based model, most models
include some indicator of special education cost.
For instance, weighted formulas—the most common
2 LEGISLATIVE ANALYST’S OFFICE
AN LAO REPORT
model used by states—typically allocate
Figure 1
funds based on counts of students
Types of Special Education Funding Models
with disabilities. As with California,
many states use a combination of Used by States
these approaches to allocate funds. Description
For example, Massachusetts allocates
Census-Based Provides funding based on overall student attendance or
most special education funding under enrollment. Assumes per-student special education costs do
a census-based model but also not significantly vary across the state.
maintains an extraordinary cost pool to Weighted Allocates funds based on counts of students with disabilities.
reimburse schools serving students with Variations of this model include (1) a single, flat weight where
students with disabilities generate the same amount of funding
high-cost services.
and (2) tiered weights where students with disabilities generate
different levels of funding based on disability category,
Framework for Evaluating placement type, or service levels.
Special Education Funding Resource-Based Provides funding based on special education resources,
including teachers, instructional aides, and specialists. Level
Models of resources typically are determined by staff-to-student ratios
that can vary by disability category, placement type, or service
Framework Focuses on Three Key
levels.
Criteria. Based on our review of the
Reimbursement Reimburses schools for all or a percentage of actual, eligible
academic literature, we developed the
expenditures. May include high-cost formulas that only
simplified framework shown in Figure 2 provide reimbursement after a certain cost threshold.
that describes three key criteria for
evaluating special education funding
models. (We list some of the key work
that informed this brief in the Appendix.) Figure 2
We discuss each of these criteria in more
Three Key Criteria for Evaluating
detail below.
Special Education Funding Models
Appropriate Fiscal Incentives. One
key criterion is to assess how the fiscal
incentives created by a specific funding
formula align with broader goals, such
as improving student outcomes and Appropriate
Fiscal Incentives
delivering services efficiently. Special
Does the formula
education funding models can affect encourage schools
to take the actions
decision-making in schools in several key
that lead to improved
ways. Formulas can affect the share of student outcomes?
students that schools identify as requiring
special education services—either
by encouraging higher identification
to generate greater funding or lower
identification to reduce costs for schools. Transparency and Ease Alignment of Funding
and Costs
Funding models can also encourage o f Implementation
Does the formula provide
or discourage schools to be more cost Is the formula easy to more funding for students
implement and understand?
with higher-cost services?
efficient or innovative in service delivery,
as we discuss in more detail below.
Finally, models can affect how schools
respond to key state policy priorities,
such as promoting early intervention,
encouraging inclusive practices,
and improving coordination between general
education and special education.
www.lao.ca.gov 3
AN LAO REPORT
Alignment of Funding and Costs. Students states can use a mix of funding formulas, set
with disabilities require additional services and aside incentive funding to encourage certain best
supports to access their education. The cost practices, implement a robust accountability
associated with providing these special education system to ensure students are appropriately
services varies based on each student’s specific identified and served, and streamline data
needs. Costs can also substantially vary within each collection to reduce administrative burden.
disability category, across different regions of a Census-Based Model Avoids Adverse Fiscal
state, the educational setting, and by other factors. Incentives While Being Easy to Understand...
As a result, special education costs can vary The primary benefit of a census-based model
significantly across schools. Models that closely is its ability to avoid encouraging schools to
link special education funding to the actual costs overidentify students for special education to
of providing services more efficiently distribute generate additional funding. Under a census-based
state funding and allow schools to better support model, schools have limited influence over how
students with varying needs, including those with funds are allocated. In theory, this allows schools
higher-cost services. to appropriately identify and serve students with
Transparency and Ease of Implementation. disabilities without influence from fiscal incentives
A formula that is simple and easy to understand to do otherwise. By providing a set amount based
reduces administrative burden at both the state on overall student attendance, the formula also
and local level and allows for more efficient is easy to understand and implement without
use of special education funding. A formula significant administrative burden and encourages
that relies on straightforward procedures for a schools to consider the cost efficiency of services
school to receive funding is also likely to reduce to contain overall special education costs. With
administrative burden, as well as potentially very few spending restrictions, the census-based
allow schools to project anticipated special model also allows for innovation and flexibility in
education funding for budgeting and planning services. These benefits are consistent with those
purposes. Funding formulas that require frequent, identified by California when the census-based
complex modifications are more administratively AB 602 model was first implemented in 1998.
burdensome to update and require more work from We note that the federal government allocates most
program administrators to stay aware of formula special education funding through a census-based
changes. If these modifications are challenging or formula based on a state’s share of the national
only sporadically implemented, funding models can child population and national population of children
become outdated and, over time, no longer aligned living in poverty.
to the initial legislative intent. …But Does Not Account for Significant
Differences in Cost. The most notable drawback
Review of Four
of a census-based model is that it does not direct
Most Common Funding Models
additional funding to schools serving students
Each Funding Model Is Associated With with higher-cost services. For instance, if a large
Certain Trade-Offs. In this section, we apply the school district serves disproportionately higher
simplified framework to the four types of special shares of students with high-cost disabilities—
education funding models used by different states such as traumatic brain injury or orthopedic
and discuss the strengths and limitations of each impairment—the census-based model would
model. Figure 3 summarizes the key trade-offs provide this district the same amount of funding
associated with each model. As the figure shows, as a similarly sized district serving a low share of
each of the funding models has a set of unique students with high-cost disabilities. In California
strengths and limitations. In building their overall and in other states, the organization of smaller
approach to funding special education, states can districts into regional collaboratives for special
take a variety of approaches to address limitations education purposes helps to address variations in
of their primary funding models. For example, identification rates across the state. Furthermore,
4 LEGISLATIVE ANALYST’S OFFICE
AN LAO REPORT
the state funds several categorical programs formulas use counts of students with disabilities
aimed at higher-cost students with disabilities. as a proxy for cost and can account for cost
For instance, the Low-Incidence Disabilities and variations due to differences in the share of students
extraordinary cost pool programs target some identified for special education, the severity levels of
additional funding for students known to have disabilities, the types of placements, and the number
high-cost services and support needs. The of services students receive. Resource-based
Out-of-Home Care program provides additional formulas provide funding based on staffing levels—
funding for students with developmental disabilities the costliest component of special education—by
and foster youth, known to be identified for allocating funds according to staffing needs and
special education at higher rates than other established staff-to-student ratios. Reimbursement
students. (In the early 2000s, the state also had formulas provide funding based on actual, allowable
a special disabilities adjustment that provided special education costs. Although these formulas can
additional funding for schools serving higher better target special education funds, they have other
shares of high-cost students but was eliminated in limitations, which we discuss below.
2011-12 due to various challenges with updating Weighted Formulas Could Introduce Fiscal
the formula.) Incentives to Overidentify or Misclassify Students
Other Formulas Can Better Target Additional With Disabilities. Under weighted formulas, schools
Funding Based on Higher Costs. In contrast to only generate additional funding when a student is
the census-based model, the other three special identified for special education. A notable concern
education funding models better target funding, is that weighted formulas could create a fiscal
as they include some indicator of cost. Weighted incentive for schools to overidentify or misclassify
Figure 3
Summary of Trade-Offs for Special Education Funding Models
Appropriate Fiscal Alignment of Transparency and Ease of
Incentives Funding and Costs Implementation
Census-Based + - +
Does not encourage Does not account for Simple, easy to understand
overidentification of students. significant differences in cost. formula.
+ +
Allows for service flexibility Does not require routine
and innovation. updating.
+
Encourages services to
be delivered in most cost
efficient way.
Weighted
- + +
May introduce incentive Provides additional funding Easy to understand formula.
to overidentify and serve based on students likely to
-
Formula weights may need
students for special have higher costs.
to be updated over time to
education.
reflect changes in relative
cost.
Reimbursement
+ + -
Less likely to encourage Provides additional funding Typically administratively
overidentification. for schools with higher burdensome to calculate
special education costs. costs eligible for
-
Does not encourage cost
reimbursement.
efficiency.
Resource-Based
- + -
Could constrain service Provides additional funding Specific funding requirements
delivery based on how staff based on resources needed can vary in complexity.
ratios are set. to support students with
-
May require updates to align
disabilities.
-
Could encourage identifying with changes in service
students to fill slots in more delivery.
restrictive classrooms with
higher funding.
www.lao.ca.gov 5
AN LAO REPORT
students with disabilities. Research using data from Reimbursement Formulas Can Be
the 1990s showed that schools in Texas identified Administratively Burdensome and Do Not
more students with speech language impairments Encourage Cost Efficiency. Since reimbursement
and specific learning disabilities to increase funding formulas are most directly linked to actual special
under the state’s weighted formula. The study education costs, schools with higher costs
found an increase in the overall identification rate, receive more funding under such a model, without
especially for districts with higher shares of black creating fiscal incentives to overidentify students
students and fiscally constrained districts with with disabilities or place them in more restrictive
limited state education funding. Formulas with settings. Reimbursement models, however, can
weights that vary by different disability categories also be the most administratively complicated
may also encourage misclassifying students as and burdensome approach, as schools need
having more severe disabilities than they actually to submit records of actual allowable expenses
do to qualify for higher funding levels. The fiscal to receive reimbursement. The state would
incentives introduced by weighted formulas could also need to develop robust checks systems of
undermine attempts in California and other states to oversight to ensure only eligible expenses are
provide early intervention services and appropriate reimbursed. Additionally, a reimbursement model
supports to students struggling academically in the could target more funding to schools that have
general education classroom first. These activities higher costs for reasons other than their special
are intended to prevent significant developmental education population—such as those that run less
and academic delays, thereby reducing the number cost-efficient programs.
of students who will need special education services
Issues for Legislative Consideration
and the associated funding generated under
a weighted model. All Funding Models Have Specific Strengths
and Limitations. As we discuss in the previous
Resource-Based Formulas Can Result in More
section, no single special education funding
Restrictive Placements, Administrative Workload,
model is perfect, and each funding model has key
and Limited Innovation. Resource-based formulas
limitations. During the forthcoming discussions
could also introduce adverse fiscal incentives. For
about changes to the existing special education
instance, resource-based formulas can encourage
funding system, the Legislature will want to
schools to identify students to fill slots in specific
consider whether the limitations of the existing
classrooms—most likely classes attended only by
system are preferable to those of other funding
students with disabilities associated with lower
models. In shifting to a census-based model in
teacher-to-student ratios and more funding. Prior to
the late 1990s, the state opted to use a primary
AB 602, California used a resource-based formula
formula that avoids adverse fiscal incentives and is
to allocate special education funding, and the
easy to implement despite a key limitation—namely,
fiscal incentive to place students in more restricted
the lack of accounting for significant differences
settings to increase funding was a primary reason
in costs across schools. The transition to a
for the state’s transition to a census-based model.
census-based model was intended to avoid some
In addition, resource-based formulas can be more
of the key shortcomings of the old resource-based
administratively burdensome, as they typically
model, which was overly complex and created
require schools to document and report staffing
incentives to place students in more restrictive
and expenditure data to the state. Under California’s
settings. Deciding to shift to a new funding model
old resource-based formula, for example, schools
should involve careful consideration of why a new
sometimes hired outside consultants to help
model and its associated trade-offs are preferable
them navigate the complex formula. Furthermore,
over the existing system, as well as how the new
California’s resource-based formula only recognized
model would be implemented to address any
certain types of service models and did not reflect
relevant shortcomings.
changes in services and best practices over time,
thus constraining schools’ ability to implement
innovative programs.
6 LEGISLATIVE ANALYST’S OFFICE
AN LAO REPORT
Legislative Policy Priorities and State Context funding for high-cost services, the Legislature could
Should Drive Changes to the Funding Formula. modify or expand the existing funding system.
In recent years, the Legislature has signaled interest It could, for example, expand the extraordinary
in increasing early intervention services—which cost pool, as applications for reimbursement
can reduce the number of students identified as consistently exceed the amount of funding set aside
needing special education—and encouraging for the program.
inclusive practices that serve students with Other Changes Likely Required to Address
disabilities in a general education setting. Both Key Policy Priorities. Although trailer legislation
of these actions can lead to improved outcomes from the 2021-22 budget package signals an
for students. In considering changes to special interest in making changes to existing special
education funding, the Legislature may want education funding allocations, additional changes
to evaluate whether certain models can better beyond the funding formula are likely necessary
promote these and/or other legislative priorities. to improve outcomes for students with disabilities.
For instance, a weighted formula could introduce For example, eliminating key barriers to promoting
fiscal incentives that discourage early intervention, inclusive practices likely requires actions beyond
as schools would only generate funding once funding changes. Surveys of special education
a student is identified for special education. In teachers and school districts suggest that key
contrast, a census-based model could encourage barriers to inclusion include general education
early intervention as a more cost-efficient approach teachers feeling unprepared to work with students
to addressing learning gaps by removing fiscal with disabilities, restrictive program requirements
incentives to identify students for special education. for inclusive early learning programs, and
The Legislature may also want consider whether organizational structures that make collaboration
certain models are more appropriate for California between general education and special education
given our state context, such as our unique school more difficult. These barriers may be more
finance system. For example, California school effectively addressed directly rather than through
districts are constitutionally restricted in their ability the primary funding formula.
to raise local revenue due to Proposition 13 (1978),
whereas districts in many other states are able to Conclusion
raise local taxes if they have extraordinarily high Each special education funding model has
special education costs. Given these constraints certain strengths and limitations. During the last
on raising local revenue, districts in California likely overhaul of the special education funding system
rely more heavily on state education funding to align in 1997-98, the state identified many strengths to
with their program costs, particularly when costs transitioning to a census-based model, namely
are extraordinarily high. avoiding adverse fiscal incentives and being
State Can Also Make Changes Within Existing administratively efficient. The strengths of the
Funding System. To address the key shortcoming census-based model continue to apply today,
of the census-based model, the state provides as does its inability to provide more funding for
some funding through other programs that target significantly higher costs. As the Legislature
higher-cost students with disabilities, such as the discusses potential changes to the current
Low-Incidence Disabilities program, extraordinary special education funding system, it will want to
cost pools, and Out-of-Home Care funding. The consider whether the strengths and limitations
limited funding and specific requirements of these of an alternative funding model are preferable to
programs allow the state to better target funding that of the census-based model, and whether
while continuing to avoid incentives to overidentify the shortcomings of an alternative model can be
students with disabilities or spend funds sufficiently addressed through other programs.
inefficiently. If the Legislature wants more targeted
www.lao.ca.gov 7
AN LAO REPORT
APPENDIX: SELECTED REFERENCES
Baker, B.D., Green, P.C., & Ramsey, M.J. (2012). Fischer, A., Syverson, E., & Duncombe, C. (2021).
Financing Education for Children with Special Needs. 50-State Comparison: K-12 and Special Education
In J.B. Crockett, B. Billingsley, & M.L. Boscardin (Eds.), Funding. Education Commission of the States.
Handbook of Leadership and Administration Retrieved November 30, 2021, from https://www.ecs.
(pp. 97–114). Routledge. org/50-state-comparison-k-12-and-special-education-
Cullen, J.B. (2003). “The Impact of Fiscal Incentives funding/.
on Student Disability Rates.” Journal of Public Kolbe, T. (2021). “State Funding for Special
Economics, 87(2003), 1557-1589. Education: Aligning Policy With Priorities.” Journal of
Special Education Leadership, 34(1), 19-31.
LAO PUBLICATIONS
This report was prepared by Amy Li, and reviewed by Edgar Cabral and Anthony Simbol. The Legislative Analyst’s
Office (LAO) is a nonpartisan office that provides fiscal and policy information and advice to the Legislature.
To request publications call (916) 445-4656. This report and others, as well as an e-mail subscription service, are
available on the LAO’s website at www.lao.ca.gov. The LAO is located at 925 L Street, Suite 1000, Sacramento,
California 95814.
8 LEGISLATIVE ANALYST’S OFFICE