Show me the pipeline/canal that can deliver water from northern California to southern.
Uh, the California Aqueduct was created in the 60's to do exactly that. (Map for the visually inclined.)
It's likely that the parents don't even know the kids have a school email account, never mind who hosts the service.
You say that in response to me pointing out my local schools send and authorization form to parents...? I doubt there's a school anywhere that's stupid enough to give kids an email address without parental permission and signing of a waiver. All it takes is one precious snowflake unexpectedly getting porn spam and the school is in hot water. In loco parentis doesn't mean schools can do whatever they want.
God doesn't play dice. -- Albert Einstein