La Sierra Academy (LSA) is a private, co-educational, transitional kindergarten–12th grade Christian school in Riverside, California. La Sierra Academy's mission statement states: "As a Christian K - 12 college preparatory school, we serve students from diverse backgrounds by providing the learning opportunities and skills needed to contribute to society, to prepare for life's work, and to flourish spiritually." LSA is a part of the Seventh-day Adventist education system, the world's second largest Christian school system.