Good News (movie, 1947)

At fictitious Tait University in the Roaring '20s, co-ed and school librarian Connie Lane falls for football hero Tommy Marlowe. Unfortunately, he has his eye on gold-digging vamp Pat McClellan. Tommy's grades start to slip, which keeps him from playing in the big game. Connie eventually finds out Tommy really loves her and devises a plan to win him back and to get him back on the field.