A sad story got a happy ending yesterday as homeless high schooler Rosa Bracero finally got her diploma from the High School for Civil Rights. Bracero missed an English Regents exam when her family was evicted on the test day, and the shelter told her she would be denied shelter if she left. The state refused to validate the makeup exam, since regulations forbid makeup exams to discourage cheating. But news of Bracero's plight helped change that policy, and she graduated yesterday after scoring an 84 on the English Regents exam. If you feel like hearing about even more uplifting stories, the Daily News has stories of four more inspiring students.