A notice of claim filed by the family alleges Jackson struck the children 58 times. The family also claims Jackson slammed one child into a bed and struck another with a hanger.
"This is a healing step" in the wake of a "crime that shook our community," president Scott Green said in a letter to students and employees on Friday.
During the extensive investigation, authorities believed the killer had fled the scene possessing evidence that could potentially tie him to the killings -- helping them narrow down some key details to pursue.
ABC News pieced together information from an affidavit released by authorities, verified publicly available evidence and pulled in reporting to create a visual timeline outlining events in the case.
The search warrant for Idaho murders suspect Brian Kohberger's Washington apartment and WSU office has been unsealed.
The fugitives were arrested for felonies ranging from homicide and aggravated assault to weapons possession.