crumbley's social media posts read, quote, mom and son day, testing out his new christmas present, end quote. on november 21, '21, a teacher at the oxford high school observed ethan crumbley searching ammunition on his cellphone during class and reported the same to school officials. jennifer crumbley was contacted via voicemail by school personnel regarding the son's inappropriate internet search. school personnel indicate they followed that voicemail up with an email but received no response from either parent. thereafter, jennifer crumbley exchanged text messages about the incident with her son on that day stating, quote, lol, i'm not mad at you, you have to learn not to get caught, end quote. on november 30, '21, the morning of the shooting, the next day, ethan crumbley's teacher came upon a note on ethan's desk which alarmed her to the point that she took a picture of it on her cellphone.