Washington Union High School is a high school in the rural community of Easton in Fresno County, California. Founded in 1892, Washington Union is most likely the second oldest high school in Fresno County. The school district encompasses roughly 90 square miles in the heart of the central San Joaquin Valley. The mascot for Washington Union is the Panthers, with school colors being purple, white, grey, and black. The school has a large and diverse population of students from the Fresno metropolitan area.