The parental right to direct education includes the right to choose, as an alternative to public education, private, religious, or home schools, and the right to make reasonable choices within public schools for one's child.
SUMMARY: Parents have a right to make reasonable choices for their child in public schools, such as opting their child out of classes the parents find objectionable. It does not give parents any power to dictate curriculum or other choices by the school for the student body at large.
The "reasonableness standard" is the lowest standard in constitutional law, and therefore the easiest test for parents to meet."