Palm Beach County, Treasure Coast school districts show increase in high school graduation rates Indian River County improves from 21st to 7th in Florida for graduation rate During a challenging year of the COVID-19 pandemic, area school districts are showing an increase in high school graduation rates, with most exceeding the state average, which also rose. By: Stephanie Susskind , Meghan McRoberts , Matt Papaycik Posted at 7:32 AM, Jan 08, 2021 and last updated 2021-01-08 18:30:27-05 PALM BEACH COUNTY, Fla. â During a challenging year of the COVID-19 pandemic, area school districts are showing an increase in high school graduation rates, with most exceeding the state average, which also rose.