A New York public school is introducing “transgender affirmation” to 3 and 4-year-old children next month.

Rosy Clark, a teacher at Carroll School in Brooklyn, New York, made the announcement of the curriculm in an email to parents and guardians in mid-January.

“This year, the week is Feb. 3-7. We are starting to talk about these ideas now, as we approach Martin Luther King Jr. Day, and as we prepare to get into February, Black History Month,” Clark wrote.

“I am lucky enough to work at this wonderful school where we strive to help our students understand the complex world around them and think critically about how they can participate in improving it. One of the ways I do that in my classroom is by exploring the 13 Principles of the Movement for Black Lives,” Clark’s email read.

Transgender Affirming is Principle 6 of the “13 Principles of the Movement for Black Lives,” which will be taught to the pre-kindergarten students. Clark explained the principle states that children have the right to choose their own gender– boy, girl, neither, or something else– “by listening to their own heart and mind” and no one else has the right to make the choice for them.

The other 12 principles include restorative justice, empathy, loving engagement, diveristy, globalism, queer affirming, collective value, intergenerational, black families, black villages, black women, and unapologetically black.