This happens in HS with the SAT/ACT. Our county here in MD paid for every junior to take the ACT last month. We had to check ID's of our own HS students before they could take the test, in other words they had to supply a picture ID to take the test. Basically it was to prevent older asian students from taking the test for a younger sibling, which has happened before. I have had to kick kids out of my testing room for this, as well as students who was trying to look up answers on line and another this year who refused to tell me his 'government'.