A shadowy group called Americans for Responsible Leadership is spending $750,000 to fight a proposal to raise the sales tax in Arizona by 1% to fund education.

The group claims it favors accountability and “transparency,” but refuses to disclose who is putting up the money to fight Proposition 204, which would make permanent a currently temporary sales tax.

Prop 204 would provide stable funding of education in the state, which is badly needed.

If you live in Arizona, please go to the polls to protect your schools.