Eight D.C.-area high schools have been ranked in the top 100 of this year's Washington Post list of most challenging high schools and secondary schools in the United States.
Saint Anselms Abbey School in Northwest is the highest-ranking school in the region on the list, coming in at #27. Within the District, Washington International School (#37) and School Without walls (#88) are also in the top 100.
The Post's rankings are based on a formula that divides the total of Advanced Placement, International Baccalaureate and Advanced International Certificate of Education tests by the number of seniors that are slated to graduate this summer.
Four schools in suburban Maryland ranked in the top 100 as well. Those schools include Poolesville High School at #47, Richard Montgomery High School in Rockville at #87, Bethesda-Chevy Chase High School at #92 and Potomac's Winston Churchill High at #100.
In Virginia, Arlington's H-B Woodlawn High School came in as the 57th most challenging high school in America.
The Washington Post ranks Oakland, Calif.'s American Indian Public Charter School as the nation's most challenging.
The eight D.C.-area schools mentioned above also rank as the eight most challenging schools on the Post's regional list. George Mason High School in Falls Church and Washington-Lee High School in Arlington round out the top 10.