Parents at the $55,000-per-year Dalton School expressed their outrage after finding out their first-graders were receiving sex education lessons, which included a cartoon teaching the children about masturbation.

Last fall, the parents were told by school administrators that they misinterpreted Justine Ang Fonte’s lesson to the children. However, after stories of Fonte’s “porn literacy” workshop to high school juniors started circulating news sites, the parents revived their complaints. While the above cartoon addresses masturbation, Fonte responded to parents by saying she doesn’t use the term when giving her lesson to six-year-olds. While her lessons also teach children about consent, parents believe the concept is slightly extreme.