Hometown: La Conner, Wash.
Previous School: Bellevue College
Thostenson played varsity volleyball at La Conner High School for Coach Suzanne Marble from 2006-2009 and played right side and setter. She earned Northwest All-League honors in 2008 and 2009, participated in three WIAA state tournaments, and was also an Academic State Champion two consecutive years. Anna played one year at Bellevue College.