Why did this 14 year old attend 3 middle schools, and attend thi

Villas - Why did this 14 year old attend 3 middle schools, and attend this school only 1 full day and shoot up the school in Georgia? Someone had to know something if he changed schools this much! Plus there is no age limit to carry a rifle in Georgia. Where oh where were the parents, he was called in last year for making threats by police at 13. With all that going on the parents knew things weren’t right!