Governor Murphy is making big promises to New Jersey's public education system, proposing the single largest investment in state history to public schools, calling for a record $11.7 billion for K through 12 education.

That's nearly $1,000,000,000 more than last year spending plan.

But it doesn't mean every district in the state will get an increase in their aid.

New Jersey's controversial school funding formula has created what critics equate to a column of winners and losers each year.

As senior correspondent Joanna Gagis reports, about 140 districts will see cuts in their state aid, including many that have been on the so-called losing side for years.

Our administration will invest just under $11.7 billion into our state's public schools.

Governor Murphy addressed a crowd at a Plainfield Elementary School today to announce his proposed budget for public schools this fiscal year, which he characterized as the single largest investment into New Jersey's public education system in our entire history.

It is also the single largest investment in our entire budget period, and it providing this funding to our public education system.

We will become the first administration ever, as the mayor said, to fully fund New Jersey's school funding formula.

This year marks the seventh and final year in the state's ramp up to fund the court required school funding formula that was modified through the legislature under a bill called SE two in 2008.

For some districts like Plainfield, those adjustments have meant annual increases.

We're expecting the increase to be just north of $30 million.

What does that mean for you in terms of programs that you're able to offer enhancing our CTE pathways, which also kind of ties into the facility needs because some spaces have to be built out for us to implement that type of programing in our district.

CTE, career, technical education pathways, we also are moving forward with tutoring programs.

We've modified our schedule at the middle school, the high school level, to provide more enrichment activities during the course of the day.

Student course, recovery, etc.. We also are expanding extracurricular activities and athletics, which are also important for our students.

Plainfield is the oldest school district in the state, and Superintendent Rashawn Hazan says that much of their funding will also go to facilities improvements as well as teacher salary increases.

Plainfield falls among the 423 districts that receive the good news today that their budget will increase.

I think what this budget allows us to do is move forward and fully support an operation a lot of our five year strategic plan without having conversations about what we need to take off the table in order to move forward.

But it's not good news for everyone under this budget, 140 school districts will see millions in cuts, and for some of them, it's been year after year of those cuts.

I don't know what else to cut without hurting kids and kids programs.

Our class sizes are already in the thirties and 35.

We are going to have a revenue side of the budget that has a big hole that says we need $27 million and an expense side that stays flat from last year.

I mean, there's no other way to approach it.

Toms River Superintendent Michael said, pointing to the seven years of losses his district has seen under SE, to which this year is a loss of 2.8 million.

South Brunswick Superintendent Scott Fetter says they already operate under a pay to play in his district.

We charge our students for parking.

We charge our students to join a club which we already charge our students to join a sport.

We charge our students for everything.

Now we might have to charge them for more things.

Taking AP classes could be a charge, but unfortunately, this time around, we're approaching next year with a -$5.6 million.

That's our nugget that we need to find.

And that is going to be people in programs.

15 districts saw their funding remain flat.

But Governor Murphy says this one doesn't fall on him.

I didn't come up with a formula.

It is literally a formula.

And let's remember a couple of things here.

Historically, the prior administration underfunded school funding by $9 billion.

Really did not let the funding formula work.

The governor said he is open to figuring out what comes next.

Now that the state has met its obligation to fully fund the formula in Plainfield, I'm Joanna Gagis, NJ Spotlight News.