To say Christie Taylor has excelled as a student would be an understatement. Taylor, the daughter of Gainesville periodontist John Taylor and his wife, Tracy, will graduate Friday night as the co-valedictorian of White Hall County High School with a 4.0 unweighted grade-point average. She was named a Star Student as the senior with the highest SAT score and won the Outstanding Student Award this year from the Georgia secretary of state’s office.