Long Island school districts are holding budget votes Tuesday with a number of them seeking tax hikes despite a big boost in federal and state aid.

Collectively the districts are proposing a nearly 3% spending increase over last year. Administrators say even with this year's big influx of money it's smart for districts to seek whatever increase the tax cap allows.

"Some districts are going to the maximum of their tax levy and that's a good business practice," says Nassau BOCES Superintendent Robert Dillon. "Because if you don't go to your limit, you then lose money in subsequent years."

Schools in Nassau and Suffolk received a roughly billion-dollar boost in aid.

MORE: See school budget breakdowns and early voting results

"I think there's a significant concern from a fiscal standpoint that the additional billions in federal aid is temporary," says Peter Warren, of Empire Center. "It's a lot of money but it's not an ongoing stream of funds."

Four Nassau districts already voted because of a Jewish holiday - all of them passed.