This 2-year longitudinal study examined relations between enjoyment of learning in Chinese and mathematics, two major subjects in Chinese schools, and indexes of school performance. The participants included 1041 students (501 boys) initially in third, fifth, and seventh grades (mean age = 10.49 years) in China. Data on enjoyment of Chinese and mathematics were collected from students' self-reports and data on school performance were collected from multiple sources in 2017 and 2019. The results showed that enjoyment of mathematics positively predicted later academic achievement, self-perceptions of academic competence, teacher-rated school competence, and peer-assessed leadership-social competence. Enjoyment of Chinese negatively predicted later mathematics achievement and self-perceptions of academic competence and nonsignificantly predicted other school performance variables. The results were discussed in Chinese context.