The Hall County school board approved about $27.5 million of construction work Monday night, including a $19.2 million bid for the additions and renovations at the Academies of Discovery. “This may be the largest SPLOST request I can ever remember,” Superintendent Will Schofield said at the school board meeting. The other big-ticket projects included $5.1 million for upgrades at North Hall High and $3.25 million for improvements West Hall High.