In a few weeks high school students throughout Hall County will turn their tassels and say goodbye to the halls they walked for four years.Some graduates will go off to college, while others will join the military or enter the workforce, but all of them will have one thing in common: a diploma.And more and more high school students over the past five years for which data are available have beengetting one.Since the 2005-06 school year, the dropout rate in the state has dropped from 4.7 percent to 3.56 percent at the end of the 2010 school year, according to the Georgia Department of Education.Part of the success could be attributed to the 2006 implementation of graduation coaches in Georgia schools, introduced by then-Gov. Sonny Perdue.Now each of the schools in Gainesville and Hall County has one, and, some students say, without their help they would not be asking the question: “What am I doing after I graduate high school?”“I wouldn’t have been able to (graduate) by myself,” said Tiffany Martin, a senior at Johnson High School.“I would’ve pulled my hair out by now — I really would have.” Her graduation coach, Michael Parker, meets with students daily to keep them on track and to discuss options after graduation.