Washington Post has announced its Most Challenging High Schools list of 2012. Four Harmony high schools made the Challenge Index and three of them in the top 100 out of 1900 schools in the list.
The Challenge Index of Washington Post ranks high schools since 1998 based on the student achievement on IB, AP, and college level tests (SAT, ACT, etc.) and graduation rates. The index score is the number of college-level tests given at a school in 2011 divided by the number of graduates that year. Also noted are the percentage of students who come from families that qualify for lunch subsidies (Subs. lunch) and the percentage of graduates who passed at least one college-level test during their high school career, called equity and excellence, (E&E). A (P) next to the school's name denotes a private school.
See the detailed list here.