How does a Canadian citizen go to high school in the US?

A Canadian citizen can attend high school in the U.S. by applying for admission to a school, which may involve providing transcripts, letters of recommendation, and proof of residency. They may need to obtain a student visa, usually an F-1 visa, to study in the U.S. Additionally, some schools may require proficiency in English and may have specific enrollment procedures for international students. It's important to check with the desired school district for specific requirements and application processes.