This paper reports on research that aimed (1) to plan a STEM class for Multimedia Applications for Presentations, a subject for vocational students in the Business and Computing Program of Chetupon Vocational School; (2) to compare students’ achievements within the STEM class with those of a traditional class, and (3) to study the satisfaction of students with the STEM class. Thirty-eight first year vocational students were chosen to participate in this experiment using the cluster random sampling technique. The research tools used consisted of lesson plans, a STEM course quality evaluation form, a student satisfaction evaluation form. an assignment evaluation form, and a learning achievement evaluation form. This study found that: (1) the quality of the teaching plan in the STEM course was very good (M= 4.66, with an efficiency of 80.03/81.94; (2) the vocational students who participated in the STEM class achieved higher results than the students in traditional class with statistical significance at the 0.05 level; and, (3) the students’ satisfaction with the learning activities in the STEM course was high (M = 4.46)
