The effectiveness of the model has been studied in over 20 years of research and field -
testing about: (a) the effectiveness of the model as perceived by key groups, such as principals, teachers, students, and parents; (
b) research related to student creative productivity; (c) research relating to personal and social development; (d) the use of SEM with culturally diverse or special needs populations; (e) research on student self - efficacy; (f) the use of SEM as a curricular
framework; (g) research relating to learning styles and curriculum compacting; and (h) longitudinal research on the SEM.