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New York (CNN) -- Mayor Michael Bloomberg said Friday that he plans to make good on a decision to slash more than 6,000 New York City teaching positions through attrition and layoffs.
The statement came as the mayor outlined his $65.7 billion spending plan for the fiscal year that begins on July 1.
Bloomberg blamed "historic state education cuts" for the planned reductions, reinforcing a similar announcement he made in February. Gov. Andrew Cuomo wants to cut $1.5 billion in state aid to schools to help keep his budget afloat.
New York is "not an island," Bloomberg said, referring to both the state and federal funding cutbacks.
The mayor's budget plan also identifies more than $400 million to be cut from various agencies as city administrators struggle to rein in public spending and close a multibillion-dollar budget gap.
"We have to balance the budget and we're not going to kick the can down the road," he said.
The mayor has faced stiff political opposition over his education plans.
Last month, his choice for schools chancellor, former Hearst Magazines chairwoman Cathie Black, stepped down after only three months in office.
"This has not worked out as either of us has hoped or expected," Bloomberg said at the time.
New York City has the nation's largest school system, with 1,600 schools, 1.1 million students and 136,000 employees.