Both Kingsport City Schools and Greeneville City Schools are seeing an increase in summer school enrollment this year compared to last year since the first round of TCAP exams under Tennessee’s third-grade retention law is now over.Third graders who do not score proficient on the English Language Arts section must repeat the grade, go to tutoring throughout the next school year, or take summer classes. Just in Kingsport City Schools 712 students enrolled in summer learning so far. That number is about 12-15% of the student population, according to the assistant superintendent of curriculum and instruction.