Learning management systems (LMSs) have been launched in universities and other schools. However, because the use of such technology in schools is relatively new in the blended context, it is essential to understand whether students will accept and continue to use it. In this study, longitudinal latent growth modelling was used to examine the relationship between changes to LMS use and belief, and satisfaction with LMS among 1179 students, mostly between 12 and 13 years old, from 25 Hong Kong schools. Both LMS use and belief had positive linear growth over time. We observed individual differences in the students' initial level of belief and the rate at which their belief changed. In addition, individual differences in the students' initial level of LMS use were observed. However, there were no individual differences in their rate of change for LMS use. The initial level of belief and increased LMS use were directly associated with system and learning satisfaction with LMS. Changes to LMS use mediated the relationship between changes to beliefs and system and learning satisfaction with LMS.