Prince George’s County High School Vaccination Sites Bremante Bryant June 3, 2021 at 5:59 pm in In The News - Afternoon Headlines, NEWS Tweet Prince George’s County will hold free vaccination clinics at some of its high schools beginning June 7th through the 15th for those 12 and older: Monday, June 7th – Northwestern and Suitland High Schools Thursday, June 10 – Crossland and Gwynn Park High Schools Friday, June 11 – Frederick Douglass and Bladensburg High Schools Monday, June 14 – Potomac High School Tuesday, June 15 – Friendly High School Tags: Frederick Douglass, free vaccinations, Friendly, Gwynn Park, Northwestern, Potomac, Prince George's County High Schools, Suitland