what is an MDR
Definition: The MDR or Manifestation Determination Review is a meeting which must take place within ten days of a behavior infraction that would cause a student to be removed from their current placement in a public school for more than 10 days.efinition: The MDR or Manifestation Determination Review is a meeting which must take place within ten days of a behavior infraction that would cause a student to be removed from their current placement in a public school for more than 10 days.