Crossword puzzle clue "one end of a class"

"I'm the beginning of eternity, the end of time and space, the beginning of the end, and the end of every place ..."

One end of a 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

Class within a class