The teacher says the student never went to the restroom that day. The kid had a service dog and caregiver who were with him at all times so how come nobody witnessed it? Nothing showing up on video and the school and local police interviewed those present that day and came up with nothing. This was an obvious hoax and the mother most likely did it for attention.
I wouldn’t say “obvious hoax.” The idea of a mother mutilating her own son with that grotesque symbol is the Himalaya Hilton of last resorts, although the list of other possibilities is getting thin.