noun
straight A's; all A's
Used in school contexts to describe a report card with the highest marks in every subject. Often used in phrases like オール５を取る.
See also: 全優 (ぜんゆう)
彼は今学期、オール５を取った。
He got straight A's this semester.
オール５の成績表を見せてくれた。
He showed me his report card with all A's.