An advocacy group says nearly 300 New Jersey school districts could see their total aid from the state decline because of a rising surcharge under Gov. Chris Christie's proposed state budget.

Governor Christie delivers his Budget Address (Governor's Office/Tim Larsen)

When he unveiled the plan in February, Christie said no school district would see its "formula aid" go down compared to this year.

Since then, education experts have said some districts could see decreases in what they get from the state.

That's because since 2010, the state has requiring districts to pay 15 percent of the state government's costs for debt service for school construction projects. The payments are rising this year.

The Education Law Center says in an analysis that 294 districts will see overall funding from the state decline if Christie's budget is adopted.

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