Peterson briefly enrolled at Youngstown State but never played football there.

He then briefly enrolled in Cours Florent drama school, but later dropped out to travel around the world.

He briefly enrolled at Seton Hall University, only to leave in March the following year to join the U.S. Army.

In 1938, he briefly enrolled in Evanson's Day School, but dropped out shortly due to lack of school fees.

He briefly enrolled in the library science graduate program at the University of Iowa that summer but returned to California following the death of his father.

Elizabeth briefly enrolled at St. Francis Xavier University in 1974, but had to leave when she didn't have enough money for tuition.

He briefly enrolled at Queen's University Belfast around 1974 as a mature student but did not stay long.

He briefly enrolled at Phillips Exeter Academy but did not stay long.

(When he was a boy, his mother even briefly enrolled him in a cartooning correspondence school.)

He briefly enrolled at both the University of Kentucky and Western Teachers College.