How many schools does greatgreat hearts have? Great Hearts operates 33 tuition-free K-12 charter schools throughout Arizona and Texas, with more schools opening soon. Explore our academies or apply for enrollment.What is great hearts k 12 academies? Great Hearts K-12 Academies Great Hearts is a network of tuition-free, in person and online public schools dedicated to improving education nationwide.What is greatgreat hearts? Great Hearts operates 33 tuition-free K-12 charter schools throughout Arizona and Texas, with more schools opening soon. Explore our academies or apply for enrollment. We’re privileged to have the support of many outstanding people and organizations within our communities. Join us in our mission to create Great Hearted leaders.Why great hearts charter schools? With a curriculum built upon a classical liberal arts tradition and a revolutionary approach to school itself, Great Hearts cultivates the hearts and minds of students in the pursuit of Truth, Goodness, and Beauty. Great Hearts operates 33 tuition-free K-12 charter schools throughout Arizona and Texas, with more schools opening soon.