The objective of this study was to find effect of Jazz smart classroom's online quiz on academic achievement of students at secondary school level. Experimental design was used in which two groups were selected one was control and other was experimental group. Experimental group was given a treatment of six weeks by using Jazz Smart Classroom's Online Quiz. A sample of 30 students of class 10 was selected. Convenience sampling technique was used. Instrument used for collection of data was pre-test and post-test. Twenty lessons were delivered by using Jazz Smart Classroom's Online Quiz. Same pre-test and post-test used. The test was validated by the experts from University of Okara. The reliability of test was determined by reliability analysis with SPSS. The t-test was used for the comparison of data of control and experimental group. The results of experiment showed that the mean scores of students in post-test which were taught by using Jazz Smart Classroom's Online Quiz scored significantly higher than those taught by using traditional method. Some recommendations were made for teachers and students to use online quiz for better teaching and learning. Government should take an initiative to use Jazz Smart Classroom's Online Quiz in high schools.