Board Thread:Questions and Answers/@comment-24520051-20171203215353/@comment-1257201-20180516200726

Some of us old-timers remember the "He'll Always Be Mon-El To Me" filk song.... 

Who was the first DC hero to graduate from high school?

(To clarify: By "first" I mean first in terms of publication, not first in the fictional DCU chronology.  And this person had to be a hero while in high school -- so a flashback to Alan Scott's graduation doesn't count.)