My son is an american and was married in japan but no longer is married he taught English for 3.5 yrs there?

Question:

He wants to go back so bad as he loves Japan and the people of japan but he has no spouse visa or a true degree is it possible for him to still find a teaching job and or live in Japan

Answer:

You need a BA / BS degree to qualify for a work visa. So no, it's not possible. Sorry.
EDIT: the other poster is wrong, you need a degree to qualify for a work visa. The government site below will tell you that.