How can you possible justify that under the clause that allows congress "To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes"?
Don't you think your stretching things a bit?
“... among the several States,”
and
“To coin money, regulate the value thereof, and of foreign coin, and fix the standard of weights and measures;”
In this case, the measure of an individual’s education when a person moves from one state to another.
Further, it would be is a “strings” clause. If you take the King’s coin you dance to the tune the King calls. If a state or school district does not like the rules, then don’t take the money.