What is diagnostic placement in an IEP?

A diagnostic placement allows a student to try out different instructional settings (like independent study) without formally changing the child’s IEP placement. The idea is that by doing this, the IEP team can gather data to determine whether the placement is right for your child.

In practice, a diagnostic placement is essentially a mutual agreement that does not trigger a change to the IEP or stay-put. This protects both the student and the school in case a disagreement arises later. In this situation, the stay-put will fall back to the previous placement so that the student does not lose any IEP services or support.

If the diagnostic trial is successful, you and your IEP team will then meet on the agreed date (set before the trial period) and formally revise the IEP to reflect the new placement option.