TRENTON – Among the main messages delivered by state lawmakers to the Department of Education at their Thursday budget hearing: Spend the new federal aid wisely and, above all else, get schools reopened. Sen. Patrick Diegnan, D-Middlesex, said the focus on ventilation systems and educational technology is important but that it all must serve the top priority – getting kids back into classrooms. “Everywhere I go, they say the same thing: When are our kids going back in school?” Diegnan said. “I tell this story to everybody. I have a 6-year-old granddaughter who’s in kindergarten and she literally has no friends. It’s scary. They’ve been quarantined now for a year. It’s just not healthy.”