The Compulsory Education Act or Oregon School Law was a 1922 law in the U.S. state of Oregon that required school age children to attend only public schools. The United States Supreme Court later struck down the law as unconstitutional.
In 1922, the Masonic Grand Lodge of Oregon sponsored an initiative to require all school-age children to attend public schools. With support also of the state Ku Klux Klan and 1922 Democratic gubernatorial candidate Walter M. Pierce, the Compulsory Education Law was passed by a vote of 115,506 to 103,685. Its primary purpose was to shut down Catholic schools in Oregon, but it also affected other private and military schools. It was challenged in court and struck down by the United States Supreme Court Pierce v. Society of Sisters (1925) before it went into effect.
The law, which was officially called the Compulsory Education Act and unofficially became known as the Oregon School Law, did not just require that children between the ages of eight and sixteen had to attend school; it required that they attend only public schools. By prohibiting children from attending private or parochial schools, the state thus forced such schools to close.
Outraged Catholics organized locally and nationally for the right to send their children to Catholic schools. In a 1925 decision, the United States Supreme Court declared the Oregon School Law unconstitutional in a ruling that has been called "the Magna Carta of the parochial school system." In the ruling, the Court asserted that "the child is not the mere creature of the state" and settled once and for all the question of whether or not private schools had a right to exist in The United States.
Pope Pius XI, in 1929, explicitly referenced this Supreme Court case in his encyclical Divini illius magistri on Catholic education. He quoted this part of the case, which says:
The fundamental theory of liberty upon which all governments in this Union repose excludes any general power of the State to standardize its children by forcing them to accept instruction from public teachers only. The child is not the mere creature of the State; those who nurture him and direct his destiny have the right coupled with the high duty, to recognize, and prepare him for additional duties.