… como um sistema de cheque-ensino direccionado para grupos sociais e étnicos mais desfasvorecidos pode produzir alguns efeitos.

THE EFFECTS OF SCHOOL VOUCHERS ON COLLEGE ENROLLMENT: Experimental Evidence from New York City

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We find suggestive evidence that educational and religious reasons may explain the different findings for African American and Hispanic students.
Although it would be incorrect to say that educational objectives were not uppermost in the minds of respondents from both ethnic groups (as respondents from both groups made it clear that such was the case), the weight given different objectives appears to have differed in some respects. African American students were especially at risk of not going on to college, and families sought a private school — even one outside their religious tradition — that would help their child overcome that disadvantage. Hispanic students were less at risk of not enrolling in college and likely sought a voucher for some combination of religious and educational benefits.

O que eu gostava de saber?

Qual a proporção de alunos de minorias étnicas nos colégios com contrato de associação. Qual a proporção desses alunos nos que têm contratos simples, que são o equivalente mais próximo ao cheque-ensino.