Crossword puzzle clue "clear in class"

Clear ___ (not clear at all)

Clear as ___ (not at all clear)

Clear in class

"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