 Any student in the school district may attend South and be eligible to participate in the program.Westerville South's first IB class was in 2007, when 31 students earned world-wide distinction in gaining the IB diploma.The graduating class of 31 in 2007 was one of the highest graduating classes in IB, and South students have had 100% of their IB diploma candidates earn the diploma for three years - - one of the best success rates in the world.