Classes at public and private schools around the region kicked off on Thursday with class sizes mostly staying the same, some dropping to the lowest they’ve been in years and others rising slightly. According to the Adirondack Daily Enterprise, Tupper Lake Central School District’s enrollment dropped to the lowest it’s been in decades, while enrollment in Lake Placid and Keene’s districts held steady. AuSable Valley CSD is seeing a slight decline in students. Long Lake CSD — the smallest of the public school districts — saw an enrollment bump.