I graduated from Montoursville and back then (1980) there were no minorities in the schools. I'm not sure if things have changed at all there or not. I'd guess not that much.
If you don't want to be in Williamsport itself, I would suggest
Loyalsock Township, between Montoursville and Williamsport. The schools are excellent (they were our biggest rival back then so shhhh, don't tell my classmates that I said that - LOL -

) and it seems to be a culturally rounded community with lots of things to do, nice tree-lined streets in some areas, especially just a bit east and west of Divine Providence Hospital in the Grampian Boulevard area, and not too far from Lycoming College (which is actually in Williamsport).
You could also go the other direction to Muncy, but I think Loyalsock schools are better than Muncy schools. Good luck with your relocation!