ARLINGTON (CBS) – Health officials are monitoring a COVID-19 cluster at St. Agnes School in Arlington. The cluster is isolated to one classroom in the private school.

As of Tuesday, at least nine cases of COVID-19 have been associated with the outbreak.

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The grade that was affected transitioned to remote learning on Nov. 21 after there was one positive case. The remainder of the school has been in remote learning this week.

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The Arlington Health Department is working with school officials to make sure all students and staff who are close contacts are identified so they can quarantine and get tested.

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The school will return to full-in person learning on Monday Dec. 7.