SIATech North County Video Production Class SIATech Oceanside High School students enjoyed working together on a project where they wrote, filmed, and edited the footage into videos. If you would like to take a fun class like video production and earn a high school diploma, learn more about SIATech North County Charter High School. SIATech CHARTER HIGH SCHOOLS EARN YOUR HIGH SCHOOL DIPLOMA SIATech is a tuition-free high school where students have 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!