wow he sounds like a very mature young man which is great!!!
i havent heard of this n i was wondering the same thing.. how could he do his certificate if his only done half the work n study?
but i think yr 10 is mainly a revision yr to go over what his learnt n then the exam.. but i could be wrong..
maybe u could have another interview with the prinicipal n get this sorted n see if it really is gonna benfit him or just push him back more??
GL xox