(CBS Detroit) — Schools around Michigan are coming together to help students and staff impacted by the Oxford High School shooting.

Nearly 100 high schools have signed up to sell “Oxford Strong” t-shirts. Proceeds will provide resources to students and staff in Oxford.

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The shirts will be available at school gyms across the state in early February as well as online.

So far, more than 6,000 shirts have been sold.

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Students returned to the high school Monday for the first time since the deadly shooting in November.

Dozens of therapy dogs, including a fleet of puppies, were available to help students, who ended the day with a gift bag. Students had been attending classes at other buildings since Jan. 10.

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