I don't live there, but friends do. And I live closer to DC so I've been following the area for a while.
A few things to note is that HOCO redistricts every 10 (maybe?) years, and there's a lot of fighting because wealthier neighborhoods and/or whiter neighborhoods don't want their kids in schools with lower income/kids of color. Currently, there's an interesting split among the Reservoir high school neighborhoods. You have Fulton/Maple Lawn and Laurel, and the Maple Lawn folks generally didn't want to be with the Laurel folks. But both areas are very diverse with respect to race, so in this particular school redistricting fight, it was more about class.
I believe it's a good school, and probably middle of the road for HOCO - like Montgomery Blair. I'm not sure how overcrowded the school it, but that could be an issue.