A teacher has been exposed for luring children to an after school art group that is in fact a gender and sexuality group. The mother of a 12-year-old student was furious after a teacher invited her daughter to an event.

Erin Lee, whose child was at Wellington Middle School in Colorado up until this year, slammed Jenna Riep for getting the youngster to go to the Genders & Sexualities Alliance event.

She told how her daughter came home and revealed a speaker told them they may be transgender if they were not comfortable in their bodies. 

The horrified mother claimed they also asked kids who they were sexually attracted to and informed they could be queer while being shown a 'Genderbread person'. 

The bizarre diagram has been used in some woke schools and workplaces to claim anatomical sex is 'male-ness' or 'female-ness' - but has been criticized by some academics. 

Lee also alleged the youngsters were even asked to keep details of the meeting a secret and warned their parents were not safe.

Lee and her husband gave their daughter permission to attend what they thought was an art group. On picking their daughter up they discovered it was a Gender and Sexuality Alliance group.

The lesson was led LGBTQ activist Kimberly Chambers, emails obtained by the Parents Defending Education advocacy group show. Chambers - the head of LGBTQ advocacy group SPLASH Youth of Northern Colorado - spoke as a school board-approved guest.

'She explained to my daughter that if she is not 100% comfortable in her female body, then she's transgender,' Lee explained, revealing that the outside speaker then told the middle-school-aged children that they were not safe around their parents.   

'She then told the kids that parents aren't safe, and that it's OK to lie to them about where they are in order to attend this meeting,' the mom, who has since enrolled her daughter in a private Christian school but still has a son at the public school, said.

The speaker also claimed that heterosexuality and monogamy are not “normal”. She advised the children and other staff to never share the names of others in the group.

Binary spokeswoman Kirralie Smith said this kind of activism in schools is unacceptable.

“Teachers do not have the right, or the professional ability, to diagnose children with gender dysphoria,” she said.

“They are educators and must steer clear of this kind of indoctrination. They have no right to pursue children without parental knowledge or consent.

“It is unprofessional, dangerous and completely inappropriate. Gender confusion is a complex and sensitive issue that should be handled with the utmost care by parents and medically trained professionals, not teachers.”