
Quoting
Mr. Knowitall
There's not a lot of case law on the subject, but there is a case from a few years back in which a federal court found that as long as a state treated all expunged records in the same way (that is, out-of-state expungements were treated in the same manner as in-state expungements) it could apply its own laws to the question of when an expunged record must be disclosed.
Start with the actual application form, because schools don't actually have to test the limits -- what information are you being asked to provide? If the application requires disclosure but you would like to try to avoid disclosure, you can seek written clarification of the school's policy on out-of-state expungements from the admissions office.