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USA: In 2015-16, 13 percent of all public school students received special education services ...

USA: „In 2015-16, the number of students ages (Anm.: SIC) 3–21 receiving special education services was 6.7 million, or 13 percent of all public school students.“

ies (Hrsg.), „The Condition of Education 2018“ (2018), S. 74