Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. St. Helena High School -  Saint Helena High School or more commonly St. Helena High is an American public high school located in St. Helena CA in the Napa Valley of California. St. Helena High serves grades 9-12 and is the only source of secondary education in the St. Helena Unified School District.
Answer:
Educational Institution