Students in five-grade class received more often-special needs education than students in nine-grade class and the response rate were higher with the pupils in fifth grade when asked about the need for special education.
Fleiri nemendur í fimmta bekk fengu sérkennslu en í níunda bekk og svarhlutfall, þegar spurt var um æskilegan tíma fyrir sérnám eða þörf fyrir sérkennslu, var hærra á meðal þeirra yngri.