Parental opt-out rights in education vary widely by country and U.S. state, but generally parents often can opt children out of specific areas like sex education, certain surveys (under federal PPRA rules), or some health/religious-content lessons while broader curriculum opt-outs are more limited. In the U.S., recent court rulings like the 2025 Supreme Court decision in Mahmoud v. Taylor expanded religious-based opt-out protections for certain instructional content, but exact rights still depend heavily on local and state law, school district policy, and the subject involved.