SOUTH WINDSOR â Schematic designs for the new Pleasant Valley Elementary School have been released, illustrating how the 102,000-square-foot building will look equipped with two entrances, a larger space for collaboration, and a wing specifically designed to serve preschool students with special needs. The building is expected to house approximately 696 students. About 110 half-time preschool students will be included, with about 55 attending in the morning and 55 attending in the afternoon. Jim Barrett, principal and architect for Drummey, Rosane, and Anderson Inc., the firm overseeing the project, said design development work will likely continue through the third week of March. Once the design is completed, Barrett said, town officials will perform another cost estimate, and he expects to be on budget, with construction costs now estimated at around $45.8 million.