WEST LIBERTY — The West Liberty School District canceled classes Monday after several teachers reported experiencing side effects after receiving a second Moderna COVID-19 vaccination over the weekend.On Saturday, district staff received the second dose of the vaccine at a special clinic. When the district checked in with teachers Sunday, 64 percent reported having some kind of side effect and 28 percent thought the side effects made them feel too poorly to go to work.Classes were canceled Monday to give the staff members a chance to feel better.