Glenbrook South High School is the No. 4 best high school in suburban Cook County, according to rankings released by Chicago magazine last week.
District 225 neighbor Glenbrook North ranked No. 1, followed by New Trier, and Prospect High School rounding out the top three.
Using a formula based on spending per student, student-teacher ratio and scores on state tests, among other factors, the magazine issued rankings of the top 20 elementary schools and top 20 high schools in suburban Cook County.
When Chicago magazine released rankings in 2010, they made a calculations error, leaving Avoca West off their list. Many parents and teachers expressed frustration and a correction was later made.
While GBS was among Chicago Magazine's picks for top five high schools in the county, U.S. News & World Report did not include the school in their ranking of the state's best high schools, released earlier this year. When asked about those rankings, GBS officials said they were 'surprised' that the school was left off the list.
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