Robert Louis Stevenson Middle School 1316 Hillview Pl, Saint Helena, CA94574-1720 Robert Louis Stevenson Middle School, or just Stevenson Middle School, is a public school in the St. Helena Unified…More School District. The school first opened in 1926. Today, it serves approximately 2,000 students in grades 6-8. It adheres to standard state curriculum and offers a full complement of extracurricular clubs and activities. The schools is the home of the Pirates, and its motto is, "Forth and Forever Forward."