Different States offer different rights. You should check not only in your State but in your School District!
Right to Education
As a parent and a tax payer you have a right to Public School Education for your child. You also have the right to educate your child in your own home (this is not as hard as it sounds). In addition to these two options there are Charter Schools, Private Schools, and Christian Education. The education of your child is not a "one size fits all" proposition. When it comes to Private Christian Schools it is not a right but a privilege, and the cost can be high. Fortunately there are a number of scholarship options in most States.
Do not surrender your rights!
Parental and student rights in schools vary from State to State and from Private School to Public School, but the main thing to remember is that you are never required to surrender your rights as a parent to raise your children to the moral standard that you desire. Even when your children are in school they are still your children. You are not required to relinquish your rights as a parent when your child enters the school building. It may be necessary for you to meet with school officials to determine just how your rights can be exercised without interfering with the rights of others.
First Amendment Rights
While it is true that "public school" funds are not to be spent on religion; freedom of speech and freedom of religion are guaranteed by the Constitution. As long as it is not distracting, children are allowed to pray in school, as well as take religious books, where clothes and jewelry that are religious, they can even refer to their faith or religion in their school work and speak openly about their faith. Your student can organize or attend religious clubs that are student initiated, and to miss school due to a religious holiday. The school can in no way demean or criticize a person's faith.