A Chicago Public Schools training program tells teachers that sex is a “socially constructed” phenomenon and instructs them to hide students’ gender pronouns from their parents, Fox News reported.

Chicago Public Schools told teachers that “gender and sex” are social constructs that have been “created and enforced” by society and threatened retaliatory measures if they didn’t use students’ preferred pronouns during a required teacher training program, Fox News reported.

A 104-slide PowerPoint titled “Supporting Transgender, Nonbinary, and Gender Nonconforming Students” asserted that “everyone has multiple, overlapping identities” and that “gender & sex are socially constructed, meaning they’ve been created and enforced by the people in a society,” Fox News reported.

Another part of the presentation told teachers not to disclose to parents if their child identifies as a different gender or prefers different pronouns, and it cautioned teachers that there could be consequences for failing to comply, Fox News reported.