So why are Nevada private schools getting taxpayer money?

I was slogging through today's blab allotment this morning, and found a rather interesting statement in a Las Vegas Sun article about exclusive private schools demanding government handouts.

A sentence in the article jumped out at me...

"The state teacher's union urged caution, saying regulations also need to include accountability measures for private schools that receive state money."

Uh, why are private schools receiving state money in the first place? Doesn't the Constitution have something to say about this? Of course it violates the U.S. Constitution, but Nevada is one of 38 states that has its own constitutional provision specifically prohibiting such expenditures.

A specific amendment to the U.S. Constitution almost passed once before, and I'm inclined to say the idea should be revived. But I don't know how much good it would do, considering how lawmakers violate similar state constitutional provisions. (Kentucky, Ohio, and Indiana also have these provisions, which are violated to some extent in all 3 states.)