Off-cycle school elections are notorious for tiny turnout — a few percent of voters decide who runs the schools and how the bond money is spent. Folding them into the November general would put those choices in front of far more citizens, which generally favors broader accountability. The tradeoff is that school races would now share a ballot with partisan contests, and critics worry that nationalizes what were nonpartisan local school questions. On balance this is a turnout question with election-integrity overtones; if you think more eyes on school governance is healthy, it points yes.
"Where no counsel is, the people fall: but in the multitude of counsellors there is safety."
— Proverbs 11:14 (KJV)