Illinois' public school districts are roughly $20 billion in debt, a staggering figure fueled in part by decades of special deals in Springfield that have given districts exemptions so they can keep borrowing beyond limits set by law. Today, that debt exceeds long-term school borrowing in most other states. It equates to about $10,000 for every Pre-K to 12th-grade public school student in Illinois... All the borrowing is a drain on taxpayers who have to repay the debt, as well as school budgets that must steer billions of dollars annually to principal and interest payments — money that could be...