In recent years, a passionate debate has developed and gained considerable attention between single-sex physical education classes and coed physical education classes. Blended physical education classes were conducted in an effort to meet and support Title IX requirements. Title IX, Education Amendments of 1972, prohibits discrimination or exclusion from participation in or receipt of benefits from any academic program or activity, based on sex, in an educational institution receiving federal financial funds. Title IX requires the integration of boys and girls in physical education classes; however, unfortunately, it does not guarantee equal treatment. Derry and Phillips (2004) stated in their study titled “Comparisons of Selected Student and Teacher Variables in All-Girl and Coeducational Physical Education Environments” that “physical education is the learning environment provided for youth in the United States to have success in motor movement, skills and play”. Recent research has provided evidence that during coeducational academic and physical education classes, girls receive significantly less attention, feedback, participation opportunities, support and encouragement. Physical education lessons should offer the development of high levels of competence and self-esteem through a variety of physical activities, games and sports. However, research implies that blended physical education classes may not provide the optimal environment needed for learning certain specific skills. Furthermore, research also suggests that this environment in mixed physical education classes changes due to one's perception based on different developmental periods in t...... middle of paper ......gs. Journal of Teaching in Physical Education, 24(2), 149. Retrieved from SPORTDiscus with full text database. Derry, J., & Phillips, D. (2004). Comparisons of selected variables for students and teachers in all-female and coeducational physical education settings. Physical Educator, 61(1), 23-34. Retrieved from SPORTDiscus with full text database. Treanor, L., Graber, K., Housner, L., & Wiegand, R. (1998). Middle school students' perceptions of coed and single-sex physical education classes. Journal of Teaching in Physical Education, 18(1), 43-56. Retrieved from SPORTDiscus with full text database.Derry, Julie A. (2002). Coeducational and single-sex physical education: Perspectives of adolescent girls and physical education teachers - Research. Melpomene's diary, excerpt from http://findarticles.com/p/articles/mi_m0LJP/is_3_21/ai_94771954/