„Family background is widely recognized as the single most important contributor to success in school.“
Russell W. Rumberger, „Dropping Out – why students drop out of high school and what can be done about it“ (2011), S. 9
„Family background is widely recognized as the single most important contributor to success in school.“
Russell W. Rumberger, „Dropping Out – why students drop out of high school and what can be done about it“ (2011), S. 9