In April 1997, the Arizona legislature enacted a law authorizing tax credits for donations to organizations that provide scholarships for private school tuition, including that for parochial schools. In September 1997, AU joined a coalition of education and civil rights groups in challenging the law’s constitutionality in a special action before the Arizona Supreme Court. The plaintiffs raised claims under both the federal and state Constitutions. On January 26, 1999, the Arizona Supreme Court upheld the tax credit by a 4-2 vote. The U.S. Supreme Court declined to review the decision.