The letter also asks that students use “Mx.,” (pronounced ‘Mix’) when addressing the teacher rather than Mr. or Ms.

The note alarmed some parents.

In a post written Tuesday night in the Facebook group “Tally Moms Stay Connected,” a parent said her child’s teacher sent home a “Welcome to my class” note, which included the request.

The parent ended her original post with the question,“What would your reaction be as a parent of 9 & 10 year olds?”