LITTLETON (CBS) – One Massachusetts school district is asking families to sign on to a pledge to safely celebrate this Thanksgiving. And if they choose not to, their children will have to wait before returning to the classroom.

The superintendent of schools in Littleton sent a letter saying in order to keep school buildings open once the Thanksgiving break is over, they want families to attest to their holiday plans by filling out a form agreeing to a set of guidelines.

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They’re asking that individuals living in households avoid travel to locations other than low-risk states during the break, and avoid participating in any social gatherings that violate the commonwealth’s guidelines.

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This applies to families with children taking part in the district’s hybrid model, athletics or in-person extracurricular activities.

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If a family declines to sign the agreement, their student won’t be allowed back in the classroom until either 14-days after school resumes or they provide a negative COVID test taken at least three days after the break.