Van Orden v$.$ Perry $(2005)$ and McCreary v$.$ ACLU $(2005)$ show that

the issue of government$-$sponsored religion has not yet been definitively settled.

there are different opinions about the establishment clause and whether it should apply to states as well as the federal government.

the free exercise clause has still not been incorporated through the Fourteenth Amendment.

the Lemon test does not apply to cases involving school prayer.