National Center for Education Statistics – Public High School Four-Year On-Time Graduation Rates and Event Dropout Rates: School Years 2010–11 and 2011–12 (April 28, 2014) “This report includes four-year on-time graduation rates and dropout rates for school years 2010-11 and 2011-12. A four-year on-time graduation rate provides measure of the percent of students that successfully complete high… Continue Reading