What is a quota system?

Answer 1

http://www.google.com/webhp?source=search_app#q=quota+system

Answer 2

I found to things:
1) that it limited the number of immigrants in the country

2) that it required a certain number of minority to be hired.

Which one of the two is it?

Answer 3

Both. It can also refer to the ethnicity or economic status of students admitted to college.

Answer 4

How is affirmative action related to education and students?

Answer 5

With affirmative action, certain minority groups are admitted to college even though their grades and test scores may not be as high as some of the majority students.

http://www.ncsl.org/research/education/affirmative-action-overview.aspx