How do Reston-area high schools measure up?
Herndon High is No. 22 and South Lakes is No. 32 in this year's Challenge Index, the annual list of area local schools organized by education resporter Jay Mathews of The Washington Post.
Since 1998, Mathews has ranked Washington-area public high schools using the Challenge Index, his measure of how effectively a school prepares its students for college.
The formula: Divide the number of Advanced Placement, International Baccalaureate or other college-level tests a school gave in 2010 by the number of graduating seniors. The index is not a measure of the overall quality of the school, but the rating can reveal the level of preparing average students for college.
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