Name changes can be a tricky issue. After all people are a creature of habit, so name changes can be disruptive. This is different from were names slowly fade away. Take for example Seven Bridges in the Honey Lake. Valley, if you know the locale, you are dating yourself. Anyhow, back to the name topic at hand—Lassen High School.
When high school was created in 1902 it was known as Lassen County High School. When it was established it was the only high school in the county. That changed in 1916, when two new county high schools opened—Big Valley and Westwood. California state law required Lassen to drop “County” and adopt “Union” to embrace all the districts in the county—thus is became known as Lassen Union High School.
A lot of people grumbled about the name change, since it was all they ever knew. Years later there is a generational change. The older insist its Lassen Union High School and the younger simply refer to their alma mater as Lassen High School.