Hello!
I can recommend exploring what the Tavistock and Portman have on offer. They do a variety of courses at different levels of different lengths and most are now via zoom so anyone can access them. I have worked a lot with adolescents in the past, but haven’t done any sort of counselling course specifically for that age group, but i am doing a systemic course with the Tavi at the moment and have found them to be fantastic as an educational organisation.
best
helen