Don’t buy a battery only car if you don’t have a place to charge it. But that’s totally irrelevant to school busses.

They wouldn’t use public chargers you buffoon.

School busses are used like 4 hours per day, so that leaves 20 hours per day for charging.

99% of School busses need to drive less than 156 miles per day.

School busses drive slowly, another thing well suited to electrification.

Honestly lithium batteries are probably totally unneeded here. Something swappable? A cheaper lower performance battery could be used and charged or swapped during the 6 hours the kids are at school. Charging speed could be actively managed to help level grid load e.g charge overnight, but not during peak usage times.