Glenbrook South High School ranked 27 on a Washington Post list of the state’s most challenging high schools. Nationally it is ranked 942. Fewer than 10 percent of high schools nationally made the list.
The ranking uses the number of college-level tests given at the school divided by the number of graduates.
College Prep School of America in Lombard ranked No. 1 in the state but Chicago Public Schools dominated the top of the list, taking four of the top six spots; Walter Payton College Prep, Lincoln Park High School, Whitney M. Young Magnet and Jones College Prep were in the 2, 4, 5 and 6 spots. Adlai E. Stevenson in Lincolnshire ranked No. 3.
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