NASHVILLE, Tenn. – The Tennessee Board of Education plans to review the state’s social studies standards two years early amid mounting parental complaints about Islam in the curriculum.

Meanwhile, parents in the Cheatham County school district and several others are growing frustrated with school officials who seemingly refuse to adjust instruction to address their concerns.

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

In many school districts in Tennessee, Georgia, Texas, California and other states parents have complained that their children spend a disproportionate amount of time studying Islam, and have voiced objections to lessons that require students to write or recite the Islamic call to prayer: “Allah is the only God, Mohammad is his prophet.”

“I think Islam was taught really in depth a little more than all the others,” Cheatham County parent Lisa Binkley told school board members at a meeting Monday. “To me, it’s almost like an indoctrination, not an introduction to a religion.”

Tammy Sharp, a parent in nearby Rutherford County, attended the same meeting to ensure school officials understand that area parents are united in opposition to the lessons.

“We don’t have a problem with the culture,” she said, according to ABC 6. “We just want the religion out of the schools.”

“We’re supporting the other parents that have the same concerns that we have,” Sharp said.

School officials in Cheatham County, like most others, point to state standards aligned with the national Common Core standards as the primary driver for studying Islam and all other major world religions in sixth and seventh grades.

Officials deny any preferential treatment towards lessons on Islam, and contend they have little control over the standards.

MORE NEWS: How to prepare for face-to-face classes

“As a district, we do not plan to spend differing amounts of time on each standard (as they relate to world religions,” Cheatham County schools spokesman Jeff Bennett said in a prepared statement cited by ABC 6. “We follow the standards as they are given by the state.”

Some people think it’s more than that.

Bakersfield, California mother Tara Cali posted a photo of a worksheet her 7th grade son received in history class on “Islamic Beliefs and Practices” that instructed students to scan a QR code with a mobile phone or computer. That link sent students to a YouTube video on “a call to prayer at the Blue Mosque in Istanbul,” EAGnews reports.

“Seriously?” Cali wrote on the assignment, with an arrow to the QR code.

She sent the worksheet back with a little note.

“My son WILL not be a part of this in any sort of way,” she wrote. “This is bad teaching material. He will NOT partake. If you have a problem with it, call our lawyer.”

Tennessee pastor Greg Locke also recently recorded a video calling out the “absolute Islamic indoctrination” in public schools, noting that students in his school district were required to take a test on Islam on the anniversary of the Sept. 11 terrorist attacks.

“Let me tell you something, when they are in sixth grade they get a half a page of watered down Christianity that has about as much Bible as a thimble, if you will, and now there’s 28 pages they have to learn about Islam, and Mohammad, and how it all came about, and about the holy Koran, and the Five Pillars of Islam, and how they pray, and when they pray, and where they pray, and how they pray, and why they pray, and about pilgrimages and all this and then they say that Allah is the only God,” Locke said in the video.

“Do not think … that is any coincidence, whatsoever, that on Sept. 11 they will be taking a test” on the Nation of Islam, he said.

The American Center for Law & Justice recently requested classroom materials on Islamic instruction from all Tennessee school districts, but an attorney who represents the bulk of them has denied the request citing technicalities and potentially “millions of dollars” to process the requests, EAGnews reports.

The Tennessee state Board of Education issued a statement pointing out that the standards, adopted in 2013, were developed by Tennessee teachers, but acknowledged the controversy and outlined plans to address it.

“The State Board of Education will be reviewing the social studies standards two years earlier than the law requires. The standards will undergo a highly transparent and rigorous review process beginning in January 2016,” BOE communications director McKenzie Manning said. “All Tennesseans will be able to provide feedback on the social studies standards using a review website. The State Board encourages the public to participate in this process.”