As-salamu alaykum, if im not mistaken, the strongest view is that Jummah can’t start before the adhan. My lunch break for school is 11:45AM To 12:45AM and Jummah starts at 12:15. What should i do in this scenario?

Imam Ibn Baz held that a Jumu'ah prayed a little before zawal is valid, and that praying it after zawal is better and is the view of most of the scholars, so if the one near you is at that time you pray it with them. Whoever does not reach a Jumu'ah at all prays Zuhr four rak'ahs, and keep looking for a way to attend, because study by itself is not an excuse for leaving the Jumu'ah.