SIATech Boyle Heights Students Hard at Work "I know I can" "I know I can" SIATech Boyle Heights high school student Dalia Leora on completing her Algebra 2 final and earning enough credits to transfer back to her high school to receive her high school diploma! Way to go, Dalia! SIATECH CHARTER HIGH SCHOOLS EARN YOUR HIGH SHOOL DIPLOMA SIATech is a tuition-free charter high school that gives students the opportunity to earn a standard high school diploma. If you are interested in earning a high school diploma, Find a SIATech Charter High School near you. SEARCH SCHOOLS!