New Jersey’s public schools have been ranked second-best in the nation, based on a study by WalletHub that looked at criteria including test scores, student-teacher ratios and graduate rates. Only Massachusetts, with an overall total. An Earth Day cleanup is planned at Palatine Park District’s Plum Grove Reservoir. Volunteers are wanted from 9 to 11 a.m. Saturday, April 21, at the reservoir off Algonquin Road on the south end of…