As far as prayer: this is a secular nation. If your kids are in a religious school, they can pray. If they are in a public school, it is an issue of separation of church and state.
Separation of church and state....
government doesn't choose, dictate, establish or mandate,
the religion of the citizens...freedom of religion
Amendment I
Congress shall make no law respecting an establishment of religion,
or prohibiting the free exercise thereof;
The First Amendment has only been manipulatively used
to strip me of my religious rights and freedoms
by politicians who gave into, those who are intolerant of my beliefs.
My son went to a public school,
and Muslim students were allowed time every day
to face East and pray at a certain time, in an empty room.
It was a yr or 2 after 9/11 when the school had canceled his Spanish class.
Why....because they brought in a foreign exchange teacher from Egypt,
teaching the kids Arabic and Middle Eastern culture, which, of course, is based on Islam.
The principal, who is Muslim, felt the school was in a better position,
to teach my child to be tolerant of different cultures and religions.
I pulled him from the class...if he can't discuss God or Jesus,
then he won't be discussing Mohammad either.