 The US Supreme Court did, however, leave an opening for state courts to act, and so legal advocates have adopted a state-by-state approach in the decades since Rodriguez. As this litigation has unfolded in almost every US state, a policy debate with philosophical underpinnings has emerged around the question: Should educational resources be distributed on an equal basis (an equity model), or according to a sufficiency threshold (adequacy model)? State constitutions differ as to the basis they suggest for the state’s interest in funding education.