Changes are coming to the Webster Central School District. The district's board of education voted Tuesday to move the secondary start time back to about 8:45 a.m. starting in 2019-20. Elementary school students, in turn, will have their start time moved up to about 7:45 a.m. The district said it will spend the next year communicating the details. Research has shown sleep deprived teenagers not only do worse in school, but are at risk for a variety of health and social concerns that could be alleviated with a few more hours' sleep in the morning. The Brighton, Fairport and Pittsford school districts have all discussed later start times recently but have not made significant changes.