When and how did the terms Freshman, Sophomore, Junior, and Senior come to describe grades 9-12 and the levels of undergraduate studies?

by dglaser54
sixthsheik

The term "freshman" originated at Oxford over 500 years ago.

"Sophomore" commonly thought to have been created from two Greek terms, sophos, meaning “wise,” and moros, meaning “foolish". It's a fun story, but "sophomore" is likely derived from "sophumer" and looks like it was created in the mid-1600s