Indiana’s top lawmakers are creating a task force to review the state’s “A-F” school grading system following the revelation former state schools superintendent Tony Bennett changed the grading formula for a Republican donor’s charter school, the Associated Press reports. Republican Senate President Pro Tem David Long and Republican House Speaker Brian Bosma announced Friday the creation of an independent task force to review the school grading system. They noted their previous concerns with the school grading system, but Bennett’s efforts detailed in emails obtained by The Associated Press raised new concerns for them…