Police say Catherine Venusto, a former employee of the Northwestern Lehigh School District in New Tripoli, Pa., hacked into the school’s computer system to change her children’s grades, the Morning Call reports [1]. According to the paper, court records show Venusto’s daughter went from a failing grade to having a “medical exception,” and her son’s grade of 98 rose to 99. The Associated Press reports Venusto admitted to changing the grades [2], though she maintained her actions were simply “unethical” — not illegal…