An elementary school principal in Nebraska has been placed on administrative leave after telling teachers not to celebrate Christmas in the classroom.

Principal Jennifer Sinclair wrote an internal memo sent to all teachers that she signed as “The (Unintentional) Grinch who stole Christmas (from Manchester).” The memo listed an array of Christmas-related activities and items that she said are not permitted at Manchester Elementary School this holiday season.

The “not acceptable” practices include any image of Santa or Christmas items on homework or assignments, Christmas trees in the classrooms, Christmas music, ornaments, and a number of other common items for the Christmas season, according to CNN.

“I will do my best to communicate the expectation from here on out, which aligns with my interpretation of our expectations as a public school who seeks to be inclusive and culturally sensitive to all of our students,” Sinclair wrote in the memo.

Candy canes were another item not allowed, with Sinclair saying the holiday candy is based in Christian traditions.

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