At Guiski Gymnasium in Dexter, the Tigers used a 15-6 fourth-quarter run to pull away for the win.
Avery Herrick scored 19 points and Peyton Grant had 15 to pace Dexter. Cheyenne Beem chipped in with eight.
Peighton Ingersoll led Stearns with 11 points. Julia Stanley and Katherine Alley combined for 15 more.
Stearns: Ingersoll 4-1-11, Alley 2-3-7, Stanley 4-0-8, Waceken 1-1-3, Farquhar, Marter
Dexter: Herrick 7-5-19, Grant 4-4-15, Beem 3-2-8, Batron 0-3-3, Webber 1-1-3, Deering, Cummings
JV: Dexter 24-10