Patrick Schwarzenegger has joined Lady Gaga's Born This Way Foundation, which works to end bullying in schools.

The 18-year-old son of former California Governor Arnold Schwarzenegger and Maria Schriver recently recorded a public service announcement for the organization's partnership with Office Depot.

Last month, Office Depot pledged to donate twenty-five percent of the sales of limited edition products for back-to-school to the Born This Way Foundation, with a guaranteed donation of $1 million this year.

The products – which include pens, gift cards and Post-It notes – include the Born This Way Foundation logo along with one of six messages: “Be Brave,” “Be Amazing,” “Be Yourself,” “Be Kind,” “Be Accepting,” and “Be Involved.”

Of Lady Gaga, Schwarzenegger told Entertainment Tonight: “I just think it's great what Lady Gaga is doing. Using her power, her star level, to promote that and to stop the cruel behavior that people are experiencing.” (The video is embedded on this page. Visit our video library for more videos.)

(Related: Lady Gaga, Office Depot partnership “endangers children,” Linda Harvey says.)