I was thinking of the scene in the Rodney Dangerfield movie "Back to School" in which Rodney Dangerfield's character, who became a wealthy businessman despite lacking a high school diploma, tries to enroll in the college in which his son is about to drop out of.

Wikipedia's description of the scene in question:

Possessing neither a high school diploma nor any transcripts or SAT scores, Thornton’s efforts seem to be stalled. But when the university's "Dean" Martin -– a play on Dean Martin -– asks how he can possibly admit an unqualified student, the next scene cuts to a groundbreaking of the university's new Thornton Melon School of Business.