Like many families, Indiana schools have to budget their expenses. Instead of setting aside money for groceries, they budget for student lunches. In place of a mortgage, schools have to pay to upkeep their facilities. But a school district rarely has a stable income. It depends on a lot of changing factors – like the number of students enrolled each year, whether voters approve a referendum agreeing to pay extra taxes, or how the state legislature decides to calculate state funding. StateImpact Indiana’s Rachel Morello reports on the challenges that creates for schools already dealing with tight budgets.