This ongoing Dutch study into the school careers of young children in
primary schools has focused in part on the influence of school and cla
ss organisation on linguistic and cognitive development. In the first
year of the study, data on the school and class characteristics were g
athered in 28 primary schools by means of questionnaires, interviews,
journals and observation. A multi-level analysis shows that difference
s in pupil achievements between classes already exist at the beginning
of primary school, but that these differences are, to a large extent,
explained by the characteristics of the pupils' backgrounds. The Dutc
h vocabulary of pupils at the end of their first year is mainly determ
ined by earlier linguistic achievement and the ethnicity and SES of th
e pupil, rather than the school or class organisation. The scores on a
performance intelligence test (block patterns) at the end of the firs
t year could not be exclusively explained by the pupils' background ch
aracteristics but also by some school characteristics.