The effects of a school's age organization (age-segregated versus age-mixed) were examined within a quasi-experimental design with 702 sixth-, seventh-, and eighth-grade students. Factors measured include popularity, perceived competence, and mixed-age and cross-sex friendships. (TJH)

This guidance instrument (student four-year planning form), middle school program, and student learning objectives for all career and vocational education courses to be changed or added represent the products of a Lake Stevens School District, Washington, curriculum development project. The guidance instrument is a form to be completed by…