Funding for an Individualized Education Program comes from three layers of government stacked on top of each other: federal IDEA grants, state special education dollars, and local district money, with Medicaid reimbursement filling in some of the cost of medically related services. Understanding how IEP funding works matters most in the moment a district tells you it can’t afford something your child needs, because your child’s right to services does not depend on any single funding stream. The rules described below exist precisely to prevent budget arguments from shrinking what a district owes.
The Three Layers, at a Glance
Federal grants through the Individuals with Disabilities Education Act cover roughly 13 to 15 percent of what schools actually spend on special education. When Congress first passed the law, it authorized federal funding up to 40 percent of the average per-pupil expenditure multiplied by the number of children with disabilities served. That ceiling was never a guaranteed appropriation, and actual funding has stayed closer to 13 percent of the national excess cost.
State and local taxes cover the rest. State funding is filtered through formulas that vary dramatically from one state to the next, and local districts add their own general-fund money on top. The practical result is that most of your child’s IEP is paid for by the state and district, not by Washington, which is why local budget rules matter as much as the federal grant math.
How Federal IDEA Money Reaches Your District
Federal special education dollars flow primarily through IDEA Part B, Section 611 grants for children ages 3 through 21.1Individuals with Disabilities Education Act. About the Individuals with Disabilities Education Act A separate, smaller stream under Section 619 provides preschool grants for children ages 3 through 5.
The Section 611 formula does not simply divide money by the number of students with IEPs in each state. Each state first receives a base amount equal to what it got in fiscal year 1999. Any funding above that base is split so that 85 percent goes out based on each state’s share of total population ages 3 through 21, and 15 percent is distributed based on each state’s share of children in poverty within that age range.2Congress.gov. The Individuals with Disabilities Education Act (IDEA), Part B The design is deliberate: by tying most of the money to total child population and poverty rather than disability counts, Congress removed any incentive for states to inflate the number of children identified as having disabilities.
For scale, the U.S. Department of Education’s fiscal year 2026 budget requested approximately $14.9 billion for Part B Section 611 grants to states.3U.S. Department of Education. Fiscal Year 2026 Budget Summary Before any of that money reaches a classroom, the State Education Agency takes allowable set-asides for administration and monitoring. What remains is distributed to Local Education Agencies under each state’s own formula.
The State Layer
Once federal dollars pass through the state, they are layered on top of the state’s own special education funding. How states distribute their share to local districts varies widely.
Some states use a census-based approach, allocating a flat per-pupil amount based on total enrollment rather than the number of students with disabilities. The logic mirrors the federal formula: remove any financial reward for identifying more students. Other states use a weighted formula that sends more money per student for higher-need categories. A student with a mild learning disability might generate one funding weight, while a student requiring a full-time aide and multiple therapies generates a much higher weight. Neither system is perfect. Census-based funding can leave districts with unusually high concentrations of students with disabilities scrambling for resources. Weighted systems can create administrative complexity and, if poorly designed, subtle incentives to classify students into higher-cost categories.
High-Cost Risk Pools
Some students require services so expensive that they can destabilize a small district’s budget. Federal regulations allow states to set aside a portion of their IDEA state-level activity funds to create a high-cost fund that reimburses districts for individual students whose costs exceed a threshold. Under 34 CFR 300.704, that threshold must be set at a minimum of three times the state’s average per-pupil expenditure.4eCFR. 34 CFR 300.704 – State-Level Activities In practice, thresholds commonly land somewhere between $25,000 and $75,000 depending on the state. Not every state operates one of these funds, but where they exist, they function as insurance that prevents a single high-need student from draining resources away from everyone else.
Local Rules That Protect the Money
Federal law imposes three interlocking rules on how districts handle IDEA money. These rules exist because without them, some districts would pocket the federal dollars and reduce their own spending by the same amount, leaving students with disabilities no better off. When a district claims a service is too expensive, these are the rules that answer back.
Excess Cost
IDEA Part B funds can only be used to pay the excess costs of educating students with disabilities. A district must first spend at least the average per-pupil amount it spends on all students before it can tap federal dollars for the additional costs of special education services.5Office of the Law Revision Counsel. 20 USC 1413 – Local Educational Agency Eligibility The calculation is done separately for elementary and secondary students. Districts figure this number by taking total spending from all sources, subtracting out certain federal and state categorical funds, and dividing by enrollment.6Individuals with Disabilities Education Act. Appendix A to Part 300 – Excess Costs Calculation Only costs above that baseline are eligible for IDEA Part B reimbursement.
Supplement, Not Supplant
Federal IDEA funds must add to what a district already spends on special education from state and local sources, not replace it.5Office of the Law Revision Counsel. 20 USC 1413 – Local Educational Agency Eligibility If a district was already paying for a speech-language pathologist out of its general fund, it cannot fire that person, rehire them with IDEA money, and redirect the freed-up local dollars elsewhere. The federal dollars have to buy something the district was not already providing. This is the rule districts most frequently trip over in federal audits, usually through budget coding errors rather than intentional manipulation.
Maintenance of Effort
A district receiving IDEA Part B funds must spend at least as much of its own state and local money on special education as it spent the prior year.7Individuals with Disabilities Education Act. 34 CFR 300.203 – Maintenance of Effort This prevents a school board from quietly cutting its special education budget whenever federal funding goes up. Districts can measure compliance in several ways, including total local funds, combined state and local funds, or per-capita versions of either. The district satisfies the requirement as long as it meets the standard under at least one of these methods.
A handful of specific circumstances allow a district to reduce its maintenance of effort without penalty. These include the voluntary departure or for-cause termination of special education staff who are replaced by lower-salaried employees, a genuine decrease in enrollment of students with disabilities, the end of an exceptionally costly program for a particular student who no longer needs it, or the completion of one-time equipment or construction costs. Outside these exceptions, falling below the prior year’s spending level triggers a repayment obligation. The state education agency must reimburse the federal government the difference between what the district actually spent and what it should have spent, or the amount of the district’s Part B grant for that year, whichever is less. The state can then require the district to cover that bill.
Medicaid and Third-Party Billing
School districts can recover some IEP costs by billing Medicaid for medically related services. Physical therapy, occupational therapy, speech-language therapy, psychological counseling, and nursing services are among the most commonly billed.8U.S. Department of Education. Medicaid Funding for School-Based Services Many states also allow schools to bill Medicaid for covered services provided to Medicaid-enrolled students who do not have IEPs.9Medicaid and CHIP Payment and Access Commission. School-Based Services for Students Enrolled in Medicaid
Before billing your child’s public benefits for the first time, the district must obtain your written consent that spells out what information will be disclosed, to which agency, and for what purpose. The regulations build in protections you should know. A district cannot require you to enroll in Medicaid as a condition of receiving FAPE. It cannot ask you to pay deductibles or copays for IEP services. And it cannot access benefits if doing so would decrease lifetime coverage, increase premiums, risk eligibility for home and community-based waivers, or force your family to pay out of pocket for services your child needs outside school hours.10eCFR. 34 CFR 300.154 – Methods of Ensuring Services You can withdraw consent at any time, and that withdrawal has zero effect on the district’s obligation to deliver every service in the IEP.
Beyond billing for direct therapy services, districts in many states participate in Medicaid Administrative Claiming programs that recover costs for activities like outreach to families about Medicaid eligibility, help completing enrollment, coordinating referrals, and translation services related to Medicaid access.11Centers for Medicare and Medicaid Services. Medicaid School-Based Administrative Claiming Guide These reimbursements cover administrative overhead rather than clinical services.
Who Pays for a Private Placement
When a school district places a student in a private school or residential program because the district cannot meet the child’s needs within its own schools, the district pays the full cost.
The harder question is what happens when parents pull their child out of public school and place them in a private program on their own. Under IDEA, a court or hearing officer can order the district to reimburse parents for a unilateral private placement if two conditions are met: the district failed to provide FAPE, and the private placement is appropriate for the child’s needs. Reimbursement is not automatic, and the burden falls on the parents to show both elements.
Congress built in notice requirements that can reduce or eliminate reimbursement if parents skip them. You must either tell the IEP team at the most recent meeting before removing your child that you reject the proposed placement and intend to seek private schooling at public expense, or provide written notice to the district at least 10 business days before the removal. Failing to give notice does not automatically bar reimbursement, but it gives the hearing officer or court discretion to reduce the amount. Exceptions protect parents who were prevented from giving notice, were never informed of the requirement, or whose child faced a risk of physical harm from delay.
Under Age 3: A Different System
Children under age 3 with developmental delays or disabilities receive services under IDEA Part C, which operates through a completely different funding and delivery system than the school-based Part B programs. Part C services are coordinated by a state-designated lead agency that may or may not be the state education department, and families receive an Individualized Family Service Plan rather than an IEP. Some states charge fees for Part C services based on a family’s ability to pay, while Part B services must be provided at no cost.
The transition at age 3 from Part C early intervention to Part B preschool services is one of the more disorienting moments in this system. The funding source, the responsible agency, and the governing document all change at once. IDEA Part B Section 619 authorizes preschool grants to states that make FAPE available to all children ages 3 through 5 with disabilities. States that allow it can also use these funds for 2-year-olds who will turn 3 during the school year. Some states offer a Part C extension option that lets families continue receiving early intervention services beyond age 3, but a child who exits Part C to receive FAPE under Part B cannot return to Part C.
When a District Blames the Budget
The Individuals with Disabilities Education Act guarantees every eligible child access to a Free Appropriate Public Education, commonly abbreviated as FAPE. That guarantee covers specialized instruction and related services designed around the child’s individual needs, provided at public expense, in the least restrictive environment appropriate for the child.1Individuals with Disabilities Education Act. About the Individuals with Disabilities Education Act FAPE is a legal obligation that falls on the school district regardless of budget pressures, staffing shortages, or what any particular funding formula produces. Cost is not a defense to failing to provide required services.
If informal efforts to resolve a disagreement fail, you can file a state complaint with the state education agency or request a due process hearing. State complaints are investigated by the SEA and must be resolved within 60 days. Due process hearings are more formal, resembling a trial before an impartial hearing officer. Many states also offer mediation as a voluntary middle ground. Both the complaint and due process routes can result in orders requiring the district to provide services, change a placement, or deliver compensatory education.
Compensatory education is an equitable remedy developed through case law rather than written into IDEA’s text. When a district fails to provide FAPE over a period of time, a hearing officer or court can order additional services beyond what the current IEP calls for, designed to put the child back in the position they would have been in had the district met its obligations. These awards are individualized. There is no rigid day-for-day formula. The decision-maker looks at what the child actually lost and what it would take to make up that ground. A district’s failure to deliver IEP services does not simply evaporate, even if the failure happened because of staffing shortages, budget cuts, or administrative disorganization. Knowing that compensatory education exists gives you leverage in IEP meetings when a district tries to minimize past service gaps.