18. Laredo, Texas
Known as the only city in Texas to fly under seven flags, Laredo has a population of 236,063 inhabitants. In regards to the education, the United Independent School District of Laredo holds a high number of elementary, middle and high schools. Texas A&M University and Laredo Community college are located here. But the percentage of the population graduated from high schools is still low at 65.3%. Only 17.7% with a college degree and 4.9% with a professional degree.
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