24. Rockford, Illinois
It is the third largest city in the state of Illinois with a population of 147,651 people. It is home to 4 public high schools. In addition to its public school system, there are 27 private schools ranging from elementary to secondary education. Even though Rockford is a large metropolitan area, it doesn’t possess any public university. The high school graduation rate is 82.5%, and only 7.90% of the population holds a professional degree.
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