Atwater High School was opened in 1958 and graduated its first four year class in 1962. The school supported the communities of Atwater and Winton as well as the families at Castle Air Force Base. Over the years thousands of students have graduated from AHS, gaining life experiences and making relationships that last a lifetime.

An element of the Class of 1966 50th year reunion in 2016 was the raising of funds to present a scholarship to an AHS student. A small fee was added to each ticket, donations were solicited and a 50/50 raffle held during the dinner. The class response was so positive that the class was able to provide two scholarships to the class of 2017.

A group of alumni began discussing ways to continue to provide scholarship support to the school, promote alumni interaction and aid in class reunion organizing efforts. The idea of a nonprofit association was born, and on August 24, 2017 the Atwater High School Alumni Association was incorporated. Still in the early stages, the response have been positive and two additional scholarships were approved for 2018.