Not sure exactly what you mean by 'group learning' - is this at school or outside school?
My DD has a fairly short attention span and I thought a private tutor wouldn't be right for her - she did an 11 plus 'class', backed up by lots of practice questions over the summer holidays at home. It worked for her, she got a place at GS this year. I do think to have any chance of succeeding you need to have specific 11plus practice (be it at home, tutor or class) as the exam material just isn't covered in school by the time they sit the exam. Good luck..
I meant external group learning. There's online learning each night and a once per week 2 hour group learning (the advertising filters won't let me say which one). Its 11+ specific, based Birmingham, Solihull and Warwick.
I tried DS with a 1 to 1 tutor, but he didn't gel with her and didn't want to go back - and getting tutor recommendations around here is a bit like pulling teeth! He seems happier in the group setting to be honest.
I think I'll 'gen up' on some of the practice papers over the summer too, to make sure that I've helped him as much as I can.