Simpson, Reckonel. “A Case Study of the Perceived Impact of Disruptive Behavior Among Grades 9 and 11 Students on Their Academic Performance at a Corporate High School”. Journal of Education 5, no. 1 (April 13, 2017): 28–42. Accessed March 12, 2025. https://stratfordjournals.com/journals/index.php/journal-of-education/article/view/1091.