Background: Researchers have emphasized the importance of integrating mental health education with academic curriculum. The focus of the current studies was "Mental Health Matters" (MHM), a mental health curriculum that is integrated with English language arts. It is taught by trained community member volunteers and aims to increase knowledge and decrease stigma toward individuals with mental health disorders. Methods: In Study 1, 142 sixth graders participated in MHM and completed pre- and postprogram measures of mental health knowledge, stigma, and program acceptability. Teachers also completed ratings of acceptability. Study 2 (N = 120 seventh graders) compared participants who had participated in MHM the previous year with those who had not using the same measures. Results: Sixth grade students and teachers rated the program as highly acceptable. Participants significantly increased their knowledge and decreased their levels of stigma. Seventh graders who had participated in MHM had significantly more mental health knowledge than peers who had not, but there were no differences in stigma. Conclusions: The model appears to be acceptable to students and teachers. Future research is needed to assess the long-term effectiveness of integrating mental health education with other academic curriculum such as language arts or science.