This study focuses on the school motivation of LGB (lesbian, gay, and bisexual) students in Flanders, the northern part of Belgium, a fairly LGB-friendly country. The authors hypothesize that LGB students in Flemish secondary schools are less motivated for school than heterosexual students because they experience less sense of school belonging and more discrimination. In addition, the authors investigate minority-specific factors that could influence the school motivation of LGB students. Hierarchical multiple regression analyses are performed on data from 1,745 secondary school students. The impact of minority stressors on the school motivation of LGB students is examined with hierarchical multiple regression analyses on data from 162 LGB students. Both analyses show that lesbian girls are less motivated to perform in school, but sense of belonging, perceived discrimination, and minority stressors do not explain this finding. Alternative explanations for these results and implications for further research are discussed.