MADISON, Wis. – From textbook manufacturers to college entrance exams companies, virtually everyone in the K-12 establishment is going Common Core.

The collective push toward the new set of nationalized math and English learning standards is putting private schools in a difficult position.

According to FoxBusiness.com, private school leaders are split on whether or not climbing aboard the Common Core train is a good decision, financially speaking.

MORE NEWS: Know These Before Moving From Cyprus To The UK

Some leaders say it’s an important selling point to parents that their school is accredited by the state. That accreditation, in turn, usually necessitates implementing Common Core.

“There is a choice with private schools. But if you are going to be state approved, you pretty much adhere to the guidelines set by the state,” Steve Sokolewicz, an assistant private school principal in New Jersey, told FoxBusiness.com.

But other observers say it pays for private schools to keep their distance from the controversial, one-size-fits-all learning standards. Many parents are seeking out private schools because they to protect their kids from the squishy, experimental learning standards.

“One group of parents that is angry about Common Core is those who are interested in mathematics,” Grover Whitehurst, director of The Brown Center on Education Policy at the Brookings Institution, told the news site. “Some of the regulations are a return to the kind of mathematics we saw in the 1990s where children were to discover their own solutions rather than being taught algorithms and solutions.”

The decision about whether to go Common Core or not gets fuzzier for private school leaders in Indiana and Louisiana, two states that provide families with taxpayer-funded vouchers that can be used to pay private school tuition.

“There is a requirement there that any student receiving a voucher would still have to be (Common Core) assessed,” Whitehurst added. “So the private schools there would have to think about their curriculums.”