ANNAPOLIS, Md. - A first-of-its-kind law bars public high schools in Maryland from automatically sending student scores on a widely used military aptitude test to recruiters, a practice that critics say was giving the armed forces backdoor access to young people without their parents' consent.

School districts around the country have the choice of whether to administer the Armed Services Vocational Aptitude Battery exam, and ones that offer it typically pass the scores and students' contact information directly to the military. Topics on the test range from math and reading to knowledge of electronics and automobiles.