The phrase "middle level" refers to something that is positioned or ranked in the middle between two extremes or higher and lower levels. Full definition
Understanding and responding to the unique developmental characteristics of young adolescents is central among the tenets of middle level education. (amle.org)
The professional preparation of middle level teachers and principals. (amle.org)
Show your pride as a member of the premiere association for middle level educators. (amle.org)