The cast of Pretty Little Liars are teaming up with DoSomething.org and Staples for the Staples for Students campaign, which encourages teens to collect school supplies and drop them off at their nearest Staples store, from July 3 through September 17, to ensure they get into the hands of thousands of deserving kids just in time for back to school.

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Their official PSA won't be released until next month, but J-14 has a sneak peek:

What do you do to give back?

Photo: Courtesy of Tilson PR

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