High Quality Content by WIKIPEDIA articles! Rainier High School, located in Rainier, Washington, was established in 1909. As of the 2009-2010 school year, it provides instruction for approximately 300 students in grades 9-12 with a staff of about 20 full time and part time instructors. The school was named a 2007 Washington State School of Distinction based on its dramatically improved WASL scores. Its mascot is the Mountaineer and the school colors are orange and black. The interim principal for the 2009-2010 school year is Wally Lis.