There are a lot of public high schools in the US.
To find the best one in each state, school-ranking website Niche rated high schools according to several factors, including SAT and ACT scores, reading and math proficiency, graduation rate, AP enrollment, and diversity.
Thomas Jefferson High School for Science & Technology in Alexandria, Virginia, scored higher than any other school, making it the No. 1 public high school in the country out of 19,314 schools.