(Celeste Decaire/CBC - image credit)Ottawa's largest school board is shuffling kids and classrooms after finding fewer elementary students are enrolled than initially predicted. The chair of the Ottawa-Carleton District School Board (OCDSB) says each spring, a formula is built to predict how many students will attend its schools. 1,600 fewer students than expectedEnrolment at elementary schools is comparable to last year's figure, staying largely unchanged at just over 50,500 students. School board trustee Lyra Evans, running for reelection in Rideau Vanier-Rideau Rockcliffe. The Ottawa Catholic School Board said it will present enrolment numbers at the Oct. 11 board meeting.