Cobb County students outperformed peers at the state and national level on the 2011 ACT test.
Students in county schools scored an average of 22.4 while students in the Marietta schools scored 21.5, according to each school system. The average in Georgia was 20.6 while the national average was 21.1. The highest possible score is 36.
The average scores have steadily increased along with the number of students taking the test. In 2005, 1,823 seniors in the county took the ACT compared to 3,249 in 2011. In Marietta, 173 seniors took the test, up from 155 last year.
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