See what’s going on at Lake Oconee Academy. A public charter school in Greensboro, Ga., Lake Oconee Academy is proud to offer another educational opportunity for the students of Greene County. Currently serving grades Pre-K4 through 7th grade, Lake Oconee Academy is a college preparatory school promoting an atmosphere of high expectations and high achievement for all children. As the number of grades served expands into high school, all students will be expected to take honors classes with Advanced Placement courses available.