This study aimed to explain the effectiveness of using Quizizz as an assessment tool to enhance students’ mastery of simple present tense. The research utilized a quantitative method and quasi-experimental design. The total number of participants in this study is 68 the eighth graders of SMP N 16 Semarang. They were divided into two groups, Class VIII A as the experimental group was taught using Quizizz they are 34 students while class VIII C as the control group was taught using lecturing, They are 34 Students. In detail, class VIII C consist of 18 female students and 16 male students. class VIII A consist of 20 female students and 14 male students with the average age 13 to 14 years old in every class.
Data were collected through pre-test, treatment, and post-tests, and the results were analyzed using SPSS 27. The result showed that the use of Quizizz for assessing simple present tense is possible to enhance students’ understanding in simple present tense. The findings showed that the experimental group had a significantly lower Asymp. Sig (2-tailed) score of 0.02, indicating that Quizizz was able for improving students' mastery of simple present tense. In contrast, the control group had an Asymp. Sig. (2-tailed) score of 0.657. Furthermore, experimental class’ average score was lower than 0.05, indicating a significant improvement in students' mastery of simple present tense. The hypothesis was accepted, suggesting that using Quizizz as an assessment tool for simple present tense can boost students' understanding of the topic, as evidenced by the pre-test and post-test scores. By this result, it is concluded that there is a significant difference on students’ simple present tense mastery who are taught using Quizziz and who are not taught using Quizizz. It shows that Quizizz is effective to facilitate students’ simple present tense mastery. In addition, Quizizz is benefit for teachers and students because it is easy to use, and can be done anywhere and anytime.