Though it is not easy for Western learners to master, the Chinese language has gain its popularity in the United States in recent years. Modern digital instructional technologies can address some of the issues in learning difficulties of the language. This study examined the effects of Quizlet-based learning activities on the attitudes, beliefs, and confidence of urban American high school students (N = 56) in learning Chinese as a second language. Results of the mixed-design ANOVA indicated that students in the experimental group reported a significantly (p < 0.05) more positive attitude toward learning Chinese as a second language than the control group. Though both groups expressed less confidence in their ability in reading, listening, speaking, and learning Chines vocabularies, the experimental group lost lesser degree of confidence in those areas. It is concluded that these Quizlet-based learning activities had a significantly positive effect on students' beliefs and confidence in learning Chinese. Future studies should include a larger sample size that covers each grade level of the high school as well as using other gamification-oriented learning tools to compare their effectiveness on students' confidence in learning Chinese.