Welcome to Sierra Middle School! We pride ourselves in providing a positive, kind, and supportive environment where all students thrive. Our mission is to plant the seeds of caring, grow the roots of empathy, and nurture the branches of knowledge so all of our students find their unique strengths, talents, and worth. As the home of the Spartans, we are safe, respectful, and responsible citizens.Sierra Middle School opened in 1952. It has been a strong, steady member of the BCSD family ever since.  Sierra staff continue a legacy of hard work to ensure each student has a safe, comfortable learning environment where they can achieve their maximum potential.  Sierra strives to be a student-centered campus and a leader in the development and success of the whole child.