According to the Sumner News Cow, Hibbs tendered his resignation Thursday morning.
The decision was made official on Friday, when the Shawnee Mission School District posted a vacancy for the SM Northwest head coaching position.
Hibbs and his staff went 7-21 (.250) in three years with the Cougars. The highlight of his tenure came in 2013 when they defeated the defending state champs from SM West to qualify for the playoffs.
Hibbs brought an impressive 116-55 record to SM Northwest. He'd spent the previous 15 years of his head coaching career at Wellington High School, where his teams claimed two Class 4A state titles, in 2001 and 2002, and a runner-up finish in 2000.
Despite the resignation as football coach, Hibbs plans to remain at SM Northwest as a physical education teacher.
For SM Northwest, the program will be seeking its fourth head coach since 2005.