An MDR, or Manifestation Determination Review, is a meeting required by federal law whenever a school wants to suspend or expel a student with a disability for more than 10 school days. The purpose is straightforward: the team must decide whether the student’s behavior was caused by their disability. The answer to that question determines whether the school can discipline the student the same way it would discipline any other child, or whether it must take a different approach. MDRs are one of the most important protections built into the Individuals with Disabilities Education Act (IDEA), and understanding how they work gives parents real leverage during disciplinary proceedings.
When an MDR Is Required
Schools can suspend or remove any student, including one with a disability, for up to 10 school days without triggering special procedures. Once a removal goes beyond that 10-day threshold, the school must hold an MDR before it can continue with the disciplinary action. This applies to long-term suspensions, expulsions, and any change of placement that takes the student out of their current educational setting for more than 10 consecutive school days.
The 10-day count can also accumulate across shorter suspensions throughout the school year. If a pattern of removals adds up to more than 10 total school days and the removals constitute a change of placement, the school is required to conduct an MDR. The key factor is whether the series of removals is substantial enough that it effectively changes where and how the student is being educated.
The Two Questions the Team Must Answer
The MDR is conducted by the school, the parents, and relevant members of the student’s IEP team. Together, they review all relevant information, including the student’s IEP, teacher observations, and any evaluations or diagnostic results, then answer two specific questions:
- Was the behavior caused by, or did it have a direct and substantial relationship to, the child’s disability? This is asking whether the disability itself drove or significantly contributed to the conduct in question.
- Was the behavior the direct result of the school’s failure to implement the child’s IEP? If the school wasn’t providing the services, accommodations, or supports laid out in the IEP, and that failure led to the behavior, the answer here is yes.
If the answer to either question is yes, the behavior is considered a manifestation of the disability. If both answers are no, it is not.
What Happens With a “Yes” Finding
When the team determines the behavior is a manifestation of the student’s disability, the school cannot proceed with the standard disciplinary consequences. Instead, several things must happen.
First, the student must be returned to the placement they were in before the disciplinary removal. The school cannot keep the child out of their regular setting as punishment. Second, the IEP team must conduct a Functional Behavioral Assessment (FBA) if one hasn’t already been done. An FBA is a structured process to figure out why the behavior is happening, what triggers it, and what the student gains from it. Third, the team must create a Behavioral Intervention Plan (BIP), which lays out specific strategies and supports to address the behavior going forward. If a BIP already exists, the team must review it and modify it as needed.
If the team finds that the behavior resulted from the school’s failure to implement the IEP, the school must immediately correct those deficiencies. This could mean providing missed services, adjusting staffing, or ensuring accommodations are actually being delivered in the classroom.
There is one exception to the return-to-placement rule. Parents and the school can mutually agree to change the student’s placement as part of the updated BIP. But this requires genuine agreement from both sides, not a decision imposed by the school.
What Happens With a “No” Finding
When the team determines the behavior is not a manifestation of the disability, the school can apply the same disciplinary procedures it would use for any student without a disability. That includes long-term suspension or expulsion.
However, even with a “no” finding, the student does not lose their right to special education services. The school must continue to provide whatever special education and related services the student needs to make progress on IEP goals and to participate in the general curriculum, even if the student is removed to an alternative setting. This is a critical distinction: a student with a disability can be disciplined like their peers, but they cannot be cut off from educational services entirely.
Special Circumstances: Weapons, Drugs, and Serious Injury
Federal law carves out three situations where the school can remove a student to an interim alternative educational setting for up to 45 school days regardless of whether the behavior is found to be a manifestation of the disability. These apply when a student:
- Carries or possesses a weapon at school or a school function
- Knowingly possesses or uses illegal drugs, or sells or solicits a controlled substance at school or a school function
- Inflicts serious bodily injury on another person at school or a school function
In these cases, an MDR still takes place, but the student can be moved to the alternative setting while the review proceeds. If the MDR later finds the behavior was a manifestation, the team must still conduct an FBA and create or revise a BIP, but the 45-day placement can remain in effect.
Your Right to Challenge the Decision
Parents who disagree with the outcome of an MDR have the right to appeal through an expedited due process hearing. To initiate one, you file a due process complaint that includes your child’s name, address, school name, a description of the problem, and a proposed resolution. A copy of the complaint goes to the state education agency.
The timeline for these hearings is compressed compared to a standard due process case. The hearing must take place within 20 school days of the date the complaint is filed, and the hearing officer must issue a decision within 10 school days after the hearing concludes. Before the hearing, you have the option to participate in a resolution meeting with the school (on a shortened seven-day timeline) or mediation to try to reach an agreement. Both parties can also waive the resolution meeting in writing and go straight to the hearing.
Schools are required to inform you of any free or low-cost legal services available in your area that could help you through this process.
How to Prepare as a Parent
If your child is facing a disciplinary removal and you know an MDR is coming, preparation makes a real difference. Gather copies of your child’s current IEP, any recent evaluations, progress reports, and communication with teachers. Look for evidence that connects the behavior to the disability, whether that’s documentation from a psychologist, patterns in behavioral data, or notes showing the behavior occurs in contexts where IEP supports weren’t provided.
Pay attention to whether the school has actually been implementing the IEP. If your child was supposed to receive a one-on-one aide, counseling sessions, or sensory breaks and those services weren’t being delivered, that is directly relevant to the second prong of the MDR. Keep records of any missed services or unmet accommodations throughout the school year, not just around the time of the incident.
You are a full participant in the MDR, not an observer. You have the right to present information, ask questions, and push back on conclusions you believe are wrong. If the team rushes through the process or doesn’t meaningfully consider the evidence linking your child’s behavior to their disability, that itself can be grounds for an appeal.