The aim of the present work is to study the effect of school satisfaction on school achievement on each other, and the moderate effects of school assets and internal assets on these relations. The sample included 494 adolescents with special educational needs. Results showed that school satisfaction and academic achievement are associated. The analyses conducted to evaluate the moderate effects of school assets and internal over school satisfaction and academic achievement had only revealed main effects. Nevertheless, the results show that school assets seem to be more significant for school satisfaction, while internal assets more important in academic achievement.