As if school boards didn’t have enough financial angst, NJSBA reported yesterday that out of five referendum questions on the ballot Tuesday, only one passed. While a small renovation project in Hopewell Township, Cumberland County got voter approval, everything else — from solar panels to renovations to new buildings to artificial turf — got a thumbs-down. Doesn’t bode well for April, when voters in every town go through the relatively meaningless exercise of voting on school budgets.