Former Cobb school superintendent Fred Sanderson will take a hefty payout into retirement. The district paid Sanderson for 48.14 unused vacation days at his daily rate of $877.48, for a total of nearly $43,000, said school spokesman Jay Dillon. The amount includes $621.54 for the employer portion of Medicare, Dillon added. Sanderson retired June 30 after five years in the top job. Sanderson had previously retired from Cobb schools, where he was a longtime principal. The district does not pay for unused sick days, Dillon said.