Claims that the legalization of gay marriage in Maryland will affect school curricula have been debunked as false.

Groups fighting against marriage equality in the four states where it's on the ballot released a barrage of ads making similar claims in the final weeks of the campaign.

In Maryland, Baltimore NBC affiliate WBAL took a look at the arguments.

“If gay marriage happens here, schools could teach that boys can marry boys,” a female announcer says in the ad.

“This claim is false,” the network concluded. “Question 6 has nothing to do with Maryland public school curriculum.”

A couple from Massachusetts, David and Tonya Parker, testify in the ad: “After Massachusetts redefined marriage, local schools taught it to children in second grade, including the school our son attended. Courts ruled parents had no right to take their children out of class or to even be informed when this instruction was going to take place.”

The network labeled the claim misleading, saying the couple's son was in kindergarten at the time and that the book refereed to, Who's in a Family, teaches about different types of families, not sex as the Parkers claim.

And regarding the claim that “same-sex marriage could be taught in local Maryland schools” if Question 6 is approved, reporter David Collins called it “false.”

“There is no direct link between Question 6 and public school curricula. The state Board of Education sets the standards for curriculum related to reading, writing and mathematics. And the state does not get involved in local board decisions. Before a school board changes curriculum, the material is vetted by parents, teachers and the community. State school board officials say that the subject has never been a curriculum subject in Maryland and they are not aware of any interest in making it one.”

(Watch the segment at WBAL.)