Maine has rural areas where there aren't any public schools, so you need to do something for those students. A public school district can decide to pay the tuition at a local private school, so long as it is not a religious one. If they did, wouldn't that be official sponsorship of religion? And the state didn't want to do that. But in the carson case, the six conservatives decided that the state's band on religious schools discriminated against religion. In other words, maine's attempt to avoid the establishment clauses bar violated the free exercise clause. So according to the six person majority, the conservative justices mayn’s programme was unconstitutional. An even better example