We used to have a cache near here called "Slug and Slide", because it was down a hill, and this parking lot is filled with those who "Slug" to work in DC during the week.
Placed in recognition of Dan (TeamSlug) pullling the plug on his long-time career. He won't need to come here any more.! Woohoo!
You should not have a problem with parking here as there are several hundred within a short walk.
Do NOT enter this area via the school grounds, and there is no need to enter onto the school grounds (clearly marked with a fence and no trespassing signs).
Note that hint provides dead give-away.