Some companies doing business in Montgomery County share revenue with Gaithersburg Middle School when you participate in their customer loyalty programs. More information about these programs can be found at the websites linked below. Most programs require you to designate the school(s) you choose to support each year.
Giant Food's A+ program donates a portion of their revenue to GMS when you use their bonus card and designate GMS as a beneficiary. You can designate up to three beneficiaries.
Escrip from Safeway
When you join escrip and shop at Safeway and other retailers, a portion of the revenue is donated to GMS.
The REDcard program at Target also shares a portion of what you spend.