摘要:Studies dealing with factors which have an influence on students outcomes are reviewed, teacher variables and teacher training are among their most common findings to influence school achievement. This study analyses the variable in-service teacher training on students? academic achievement. The analysis levels are departments and schools, being department the level where the relation among variables is more significative. There are significative correlations between the in-service teacher training in their own subject and the subject pedagogy in 50% of the analysed departments. In-service teacher training is recommended to be organized, taking into account these differences (context, teacher variables, in- service teacher training variables) among departments, schools and districts to compensate the unequal school variables.