Limestone District School Board sets out COVID-19 plans for back to school Tri-Board Student Transportation Services oversees student busing for the Limestone District School Board, Algonquin & Lakeshore Catholic District School Board and the Hasting Prince Edward Public School Boards.Tri-Board is responsible for getting approximately 30,000 students going to and from school everyday.Physical distancing on buses will be helped somewhat by some parents opting for remote learning, according to the Tri-Boards head Gord Taylor.“We suspect those will be diminished by 20 or 25 per cent because some parents are opting to do remote learning so they won’t be using the bus.”Like schools, students Grade 4 and up have to wear masks, and Taylor is.