This falls squarely in the “parental responsibility” category and school officials should have no authority to make this kind of demand. (Not to mention the fact that EULAs clearly state not to divulge passwords.) If the issue is serious enough to require access to the student’s account then go through the proper channels and get a warrant.
via Motherboard – Illinois Says Rule-Breaking Students Must Give Teachers Their Facebook Passwords.
“School districts in Illinois are telling parents that a new law may require school officials to demand the social media passwords of students if they are suspected in cyberbullying cases or are otherwise suspected of breaking school rules.”