 Six of the top 20 charter schools in Phoenix are in the Great Hearts system, and Great Hearts students achieve SAT scores more than 300 points higher than the national average.In June 2016, the Great Hearts corporate Board of Directors adopted a policy that requires their transgender students to align all school activities with their biological sex, rather than the student's gender identity.The student's participation in extracurricular clubs, sports, and the use of facilities such as restrooms all must align with the sex of the student as printed on his or her birth certificate.