SIATech North County High School Student Hard at Work Finish High School in Oceanside! Jeny Alvarado and Ms. April, hard at work today at SIATech North County Coastal Independent Study High School! Jeny (pictured on left) is an amazing young woman. She has 2 kids, works part time, and is involved in personal development work outside of school. She's going to graduate this year!!! Way to schedule each day so you get the most out of it, Jeny! Learn more about SIATech North County High School in Oceanside, California. 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!