Abstract: This True Experimental study compared academic performance of students in class VIII in one of the English Medium School of Vadodara, India among traditional instruction, only Computer Assisted Instruction (CAI) and Computer Assisted Instruction with simultaneous discussion. The design used in this study was posttest only control group design Three sections of class VIII students were selected and groups were randomly allotted. ANCOVA was used in data analysis. There was significant difference in the post test scores of students receiving traditional method, only CAI and CAI with simultaneous discussion. Bonferroni correction was used for Post hoc test. It revealed that traditional method is as effective as only CAI. CAI with simultaneous discussion is more effective than traditional method. CAI with simultaneous discussion is more effective than only CAI.