Despite dismal student performance on annual exams covering math and reading, Kendall County high school graduation rates remain high, according to a Kendall County Times analysis of 2016 data from the Illinois State Board of Education.
Of the five schools analyzed within the county, Oswego High School showed the greatest disparity. In a year when 98 percent of seniors graduated on time, just 25 percent of students actually passed annual tests that the state uses to determine who is "ready for the next level."
The end-of-year tests known as the Partnership for Assessment of Readiness for College and Careers, or PARCC, are administered to third- through eighth-graders in Illinois, testing them based on Common Core standards. High schoolers also took the tests through 2016.
A composite score combines the results of the subject tests. Students whose scores either meet or exceed expectations are considered "ready for the next level."
Schools' graduation fraud index shows the difference between the composite passing rate and the graduation rate.
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Kendall County schools graduation fraud index
| Kendall County high school | School district | City | Annual exam pass rate (%) | Graduation rate (%) | Graduation fraud index |
| Oswego High School | Cusd 308 | Oswego | 25.3 | 97.5 | -72.2 |
| Plano High School | Plano Cusd 88 | Plano | 24.8 | 94.4 | -69.6 |
| Oswego East High School | Cusd 308 | Oswego | 29.7 | 98.4 | -68.7 |
| Yorkville High School | Yorkville Cusd 115 | Yorkville | 30.9 | 86.2 | -55.3 |
| Newark Comm High School | Newark Chsd 18 | Newark | 45.5 | 97.9 | -52.4 |
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