The Washington Post ranks 1,900 high schools each year.

The Gwinnett School of Math, Science and Technology was ranked No. 17 in the country by The Washington Post as one of "America's Most Challenging High Schools." The charter school founded in 2007 is located in Lawrenceville.

St. Andrews, a private college preparatory school in Savannah, was ranked No. 18 on The Washington Post list.

The Washington Post ranks 1,900 high schools using a formula that includes the number of Advanced Placement, International Baccalaureate and Advanced International Certificate of Education tests given at a school each year, divided by the number of seniors who graduatated that year (The Washington Post).

To read more about "America's Most Challenging High Schools" in the Washington Post, please click HERE.

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