„Only a small fraction of pupils aged 10-15 attend separate schools for pupils with special education needs. Numbers in segregated education at fifth grade fell from 4 600 in 1980/1981 to 1 500 in 2015/2016, or from 3.9 % of enrolments to 1.8 %.“
EU-Kommission (Hrsg.), Education and Training Monitor 2018 (2018), S. 12.