Hall County school officials moved ahead this week on the issue of two bonds totaling $19.5 million that will go toward major school improvements, including the building of an addition to the Academies of Discovery on Atlanta Highway. School board members unanimously approved a resolution Monday to cover each of the $9.75 million bonds, which will be repaid by funds collected through a 1 percent education special purpose local option sales tax approved by voters in November 2015. Borrowing the money to improve school facilities immediately and pay it back as funds from the E-SPLOST are collected will allow school officials to lock in on attractive interest rates on each of the bonds.