The Tennessee high school graduation rate has never been higher and Warren County is doing its part to contribute to the upward trend.The state announced Thursday the graduation rate for the 2016-17 school year was 89.1 percent, the highest on record for Tennessee. Statewide graduation is up 3.6 percent in six years.Locally, Warren County’s graduation rate has climbed to 94.1 percent. That’s up from 87.5 percent five years ago, a 6.6 percent increase.Director of Schools Bobby Cox credits the work of educators at WCHS and at the High School Annex with helping to improve the graduation rate.“Sometimes it’s just a matter of getting students to complete a couple courses to graduate,” said Cox.