Riverglen Junior High School was established in August of 1998. Superintendent Dr. Tony Dennis cut the red ribbon at the school's dedication, Friday, September 8th. The principal, Stan Holton, said at the dedication ceremony that “It is a very exciting moment for me, to be a principal at a new school.

The English Language Academy was also opened at Riverglen in 1998, which consisted of 100 students who were learning English as a second language. It remained at Riverglen until 2008, when it moved to Jackson Elementary.

In August of 2004 the Treasure Valley Math and Science Center was established at Riverglen, under the leadership of Dr. Holly MacLean.