Clements 637 Klein High School 633 Texas Academy of Mathematics and Science 556 Cistercian Prep School 451 LBJ High School 410 Stephen F. Austin 341 Science Academy of South Texas 321 St. Stephen's Episcopal School 252 Greenhill School 248 Georgetown High School 206 Austin Area Homeschoolers/Bellaire/First Colony 186 John Cooper School 153 Bellaire 152 Hockaday 78 Sam Houston 69 First Colony Middle School 62 Westchester Academy for International Studies 60 Li's Home School 49 Allen Academy 48 harmony school of excellence 47 Reagan High School 25 Davis High School 8