I agree with Eric about USC. My niece attended there. It's a beautiful campus, but a few blocks away, the neighborhood gets rough. The same with Penn, Yale, Columbia, and the U. of Chicago.
On the subject of DC girls' basketball, it's quite good. Hypothetically, if a coach could get all the metro area talent, the team would be top 5-15 year in and year out. Riverdale Baptist is a national power. St. John's is very good. Eleanor Roosevelt was a monster this year, beating De'Janae's team twice by 20+.
In addition to our Jamelle and Kaili, notable players have included Kara Lawson, Monica Wright, Jasmine Thomas, Lynetta Kizer, Marissa Coleman, and Tierra Ruffin-Pratt. Current college players include Lindsay Allen, Jonquel Jones, and Natalie Butler.
On the men's side, some skinny kid named Kevin something-or-other a few years ago was pretty good. I just read that he won some big award.