Braintree school officials say competition for space at elementary schools may result in fewer spots available for full-day kindergarten. According to Superintendent Peter Kurzberg, increasing space needs for other grades at Hollis, Morrison, and Liberty Elementary could mean that the full-day kindergarten classrooms at each could be pushed out. The only classrooms definitely available for the program are the three at Braintree High, which can accommodate 20 students each. With 120 students in the program last year, there may not be enough space for all those who want to participate next year. Officials are looking into expanding the program to other buildings, but if this isn't possible, a lottery will be used for full-day classes. There is enough space for all children to take half-day kindergarten classes, a requirement by law.