Introduction
The Individuals with Disabilities Education Act requires states to maintain formal dispute resolution procedures for special education disagreements. These procedures include written state complaints, mediation, and due process complaints. States report dispute resolution data annually to the U.S. Department of Education's Office of Special Education Programs as part of IDEA Section 618 reporting.[1]
These data are useful, but they are often misunderstood.
A high number of filings does not necessarily mean a state is violating IDEA more often than another state. A low number of filings does not necessarily mean families are satisfied. Filing counts can reflect many factors, including parent awareness, attorney access, state procedures, district settlement practices, trust in the complaint system, and local advocacy culture.
For that reason, the data should be read as a measure of system activity, not as a direct measure of school quality or legal compliance.
This brief examines national trends from 2018–19 to 2023–24 and then reviews the effect of New York on the 2023–24 due process data.
Data Source and Method
This analysis uses IDEA Part B dispute resolution data reported through IDEA Section 618. The three categories analyzed are:
- written state complaints;
- mediation requests; and
- due process complaints.
These categories are reported by states to OSEP. The federal dispute resolution survey collects counts of written signed complaints, mediation requests, due process complaints, and expedited due process complaints.[2]
This brief does not add expedited due process complaints as a fourth category because expedited complaints are reported separately but are also included within the due process complaint count.[2]
Percent changes were calculated by comparing reported counts from 2018–19 and 2023–24. The New York adjustment was calculated by subtracting New York's reported 2023–24 counts from the 50-state totals.
Findings
Finding 1: Total reported dispute activity increased substantially.
Across the U.S. and outlying areas, reported dispute activity increased from 38,584 events in 2018–19 to 61,992 events in 2023–24.
That is an increase of approximately 61%.
| School year | Written state complaints | Mediation requests | Due process complaints | Total |
|---|---|---|---|---|
| 2018–19 | 5,575 | 11,671 | 21,338 | 38,584 |
| 2023–24 | 9,927 | 12,914 | 39,151 | 61,992 |
The increase was not evenly distributed across categories.
Written state complaints increased by approximately 78%. Due process complaints increased by approximately 84%. Mediation requests increased by approximately 11%.
This suggests that formal complaint activity increased much faster than mediation activity.
Finding 2: The pandemic-era decline was temporary.
The data show a decline in total reported activity during 2020–21. That year, the U.S. and outlying areas reported:
| Category | 2020–21 count |
|---|---|
| Written state complaints | 4,186 |
| Mediation requests | 8,725 |
| Due process complaints | 23,567 |
By 2023–24, all three categories had increased.
The data does not identify the cause of the post-pandemic increase. Several explanations are plausible, including delayed evaluations, missed services, compensatory education disputes, placement disagreements, staffing shortages, and reduced trust between families and school systems.
The data only supports the narrower conclusion: formal dispute activity increased after the pandemic-era decline.
Finding 3: Due process is the largest category nationally.
In 2023–24, due process complaints were the largest reported dispute category.
| Category | U.S. and outlying areas, 2023–24 |
|---|---|
| Written state complaints | 9,927 |
| Mediation requests | 12,914 |
| Due process complaints | 39,151 |
Due process complaints represented approximately 63% of the three-category total.
This is important, but it requires caution. Due process complaint counts are filing counts. They do not show whether the complaint proceeded to hearing, settled, was withdrawn, resulted in parent relief, or resulted in district relief.
The count shows volume. It does not show outcome.
Finding 4: New York substantially distorts the national due process picture.
Across the 50 states in 2023–24, there were 37,198 due process complaints. New York reported 26,708 of them.
That means New York accounted for approximately 72% of due process complaints across the 50 states.
| Category | 50 states total | New York | 50 states excluding New York |
|---|---|---|---|
| Written state complaints | 9,857 | 417 | 9,440 |
| Mediation requests | 12,283 | 455 | 11,828 |
| Due process complaints | 37,198 | 26,708 | 10,490 |
| Total | 59,338 | 27,580 | 31,758 |
When New York is included, due process appears to dominate the dispute resolution landscape.
When New York is removed, the distribution changes substantially:
| Category | 49-state count excluding New York | Share of 49-state total |
|---|---|---|
| Written state complaints | 9,440 | 29.7% |
| Mediation requests | 11,828 | 37.2% |
| Due process complaints | 10,490 | 33.0% |
Without New York, mediation requests are the largest category, and the three categories are relatively balanced.
This does not mean New York should be ignored. It means the national due process total should not be treated as representative of ordinary filing patterns across most states.
Finding 5: Written state complaints may be underused relative to their legal function.
Written state complaints increased from 5,575 in 2018–19 to 9,927 in 2023–24. Even with that increase, they remain far below due process complaints nationally.
This matters because written state complaints can be well-suited for certain IDEA issues. State complaint procedures require the SEA to resolve complaints that meet IDEA requirements. When the SEA finds a failure to provide appropriate services, it must address corrective action, including appropriate remedies such as compensatory services or monetary reimbursement where appropriate.[3]
For advocates, this is important. A dispute about missed services, evaluation timelines, implementation failures, or procedural violations may fit the state complaint process better than due process.
That is not always true. Some disputes require due process. But the lower use of written state complaints raises a practical concern: families may not always be receiving clear advice about which forum best matches the problem.
Finding 6: Mediation is growing slowly compared with formal complaints.
Mediation requests increased from 11,671 in 2018–19 to 12,914 in 2023–24.
That increase is modest compared with the growth in written state complaints and due process complaints.
Mediation under IDEA must be voluntary, conducted by a qualified and impartial mediator, scheduled in a timely manner, and, if resolved, reduced to a legally binding written agreement.[4]
Still, mediation only works when parties believe the process can produce a meaningful result. If families believe mediation is simply another meeting without authority or remedy, they may bypass it. If districts do not come prepared to resolve the dispute, mediation may not reduce formal filings.
The data does not prove why mediation is growing more slowly. But the difference in growth rates suggests that mediation is not absorbing the increase in formal conflict.
Discussion
The main finding is not simply that special education disputes are increasing. The more useful finding is that different dispute processes are increasing at different rates, and the national due process picture is strongly affected by one state.
For attorneys and advocates, the data supports three practical conclusions.
First, forum selection should be treated as legal strategy. A state complaint, mediation request, and due process complaint are not interchangeable. Each process has different procedures, timelines, evidentiary demands, and remedies.
Second, due process filing counts should not be used alone to describe national special education conflict. New York's due process volume is so large that it changes the national picture. Any national discussion of due process should either account for New York or explain its effect.
Third, written state complaints deserve more attention. They may be especially useful for implementation failures and procedural issues where the record is clear and the requested remedy is within the SEA's complaint authority.
The data also has implications for school districts. Increased filing activity should not be dismissed as parent hostility. Formal filings often follow earlier failures in communication, documentation, implementation, or trust. Prior written notice, service logs, progress monitoring, and clear IEP drafting remain basic risk-control tools.
Limitations
This analysis has several limitations.
First, the data are counts of reported dispute events, not counts of unique students or families.
Second, filing data does not show outcomes. The data does not identify how many complaints were substantiated, settled, withdrawn, dismissed, or decided after hearing.
Third, state comparisons should be made carefully. Differences in state procedures, attorney access, advocacy networks, settlement practices, and reporting practices can affect filing counts.
Fourth, the data does not establish causation. The increase after 2020–21 may be related to pandemic-era disruptions, but the dataset itself does not prove that relationship.
Conclusion
IDEA Part B dispute resolution activity increased substantially from 2018–19 to 2023–24. Written state complaints and due process complaints increased much faster than mediation requests.
Due process is the largest category nationally, but the national due process count is heavily influenced by New York. When New York is removed, written state complaints, mediation requests, and due process complaints are much more evenly distributed across the remaining 49 states.
For attorneys and advocates, the practical lesson is not that every dispute should become more adversarial. The lesson is that forum selection matters.
The right question is not only whether IDEA was violated.
The right question is: which process can prove the violation, produce the needed remedy, and protect the child's educational interests most effectively?
References
- U.S. Department of Education, IDEA Section 618 Data.
- U.S. Department of Education, EMAPS IDEA Part B Dispute Resolution Survey User Guide.
- 34 C.F.R. § 300.151, Adoption of State complaint procedures.
- 34 C.F.R. § 300.506, Mediation.
- 34 C.F.R. § 300.507, Filing a due process complaint.
- CADRE, National & State Dispute Resolution Data Dashboard.