Number of Appearances: 1
Note: teaches World Civilization in high school
On page 1 in Superman #670, Supergirl is in her civilian apparel, shopping at the Pelham Square Market in Queensland Park on a Sunday morning. Two high school students are checking her out admiringly and one of them, a black teenager, tries to use a line to start up a conversation with her. He says to Kara, "Hey, think I seen you at school. You got Leahy for World Civ too?"
Kara responds, "Guys, guys. I heard every word you just said. And it's not like it's not flattering, in its way, but I'm just not--"
It is not clear from the context of this scene that Kara (Supergirl) actually attends school with these two youths. The black teen seems to have simply been pretending to recognize Kara. It is likely that Leahy really is his World Civ teacher. But this may well be at a school other than the one that Kara attends.