OXFORD TOWNSHIP, Mich. — The prosecutor overseeing the case against the student accused in last week’s deadly Michigan school shooting and who took the rare step of charging his parents left open the possibility Monday that school officials could also face charges, saying “in this case, a lot could have been done different.” Oakland County Prosecutor Karen McDonald said the investigation’s findings will determine whether school officials will be charged in last Tuesday’s attack at Oxford High School. But she noted that three hours before Ethan Crumbley allegedly opened fire, killing four fellow students and wounding six others and a teacher, the 15-year-old was sent back to class after a meeting between school counselors and his parents over a drawing a teacher found on his desk that included a bullet and the words “blood everywhere.” “In this case a lot could have been done different.