I would like to know if LE have talked to any parents with kids marked absent that day and haven't come back.I'm sure there are some parents that have kept thier kids out.There's always the possibility a parent or guardian had a child,saw Kyron and coerced him to leave with them,look for a tree frog,etc.
Probably a longshot,but a boy was abducted,raised by his abductor and went to school.Later,the abductor took another boy and the first boy,then a teen,escaped with the child.They made a movie of it,sad story,horrific.But anyway,there could be a child taken and now being raised by the man or woman,found an opportunity to take Kyron.I'm just throwing this out there,because I've run out of scenarios,actually.