Stability of school effects in Dutch secondary education : the impact of variance across subjects and years

This chapter reports the results of an investigation into the stability across both years and subjects of school effects in Dutch secondary education. What distinguishes the present study from previous ones dealing with the stability of school effects is the fact that two types of instability have been investigated simultaneously. Not only the instability across years and subjects has been established, but also their interaction. This interaction effect should be interpreted as follows: a school may produce outstanding results with respect to a certain subject one year, while the next year the... Mehr ...