Following a similar thread here, from someone who was going abroad for a year during her son's year 10. in my case, this has already happened. My 15 year old step son is returning after two years abroad. The local school has advised me to put him back one year into year 10, as he has no coursework for assessment from the first year of the various two year GCSE syllabuses which he needs to undertake. However, his education abroad has been extremely good. He has now taken IGCSEs in Maths and English (a year early). He can fluently speak a foreign language (for a third GCSE and A level). So, for some subjects, he would be going back TWO years.
My question is: Should I be insisting that he starts year 11 and catches up on Humanities during Maths and English lessons (which subject to his grades in August), he will not need to do. He is a bright boy!