Crossword puzzle clue "first class for short"

Allow first-class passengers to board first, say

First class, for short

First class, for short

"Class of" class

Class where you might learn about class, informally?

Second in his class in West Point's class of 1829

History class: F -- “The professor ignored my attendance record and class participation, judging me entirely on ___”

Class, level or class level