Amid Policy Confusion, Senior Is Allowed to Apply to Harvard
Kimberly Cummins, senior at Boys and Girls High School in Brooklyn, says she was told by school officials that she could not apply to Harvard University because she was not among top five students in school; Cummins's older sister, Kelia, law student at New York University, took matter up with city and education officials, who say that citywide rules allow students to apply to any college; photo (M)