Where to find ISEB support, please?

[Cornemuse]

Hello. If this is not the correct place to post this question, please let me know and I will happily move it.
My son is in Year 6. For a variety of reasons I won't bother describing here, I believe that he probably fared quite poorly in his ISEB test. He did some preparation some Atom Learning practice but there were plenty of students in his year who were taking prep courses in London, weekly online group preparation classes, private ISEB tutoring, etc.
He will re-take the ISEB next year. And I would like him to prepare more thoroughly than he did this year. Where can I start researching the various
options for ISEB test prep, please? I have no idea where to look.
Thank you.

rather than post on the boarding school board may i suggested having mn move the thread/question to either the education or secondary education board.
you do this by reporting your post and requesting they move it.
you will get more replies in either of those sections.

Thank you. I will do as you recommend.

Atom can be a good way of preparing, but not all the tests are quite “real world”.

We found Pretest Plus good for CAT4 practice and I suspect their ISEBs are good too. And Pluspapers Learning Centre was really useful for past papers and creative writing / comprehensions for 2nd round. Their tests seemed more like what my DDs got at the actual assessments. Atom was more “play based” with lots of silly rewards for the students.

ISEB itself recommends Bond online (no doubt they’re in a lucrative deal with Bond but anyway!)

https://www.iseb.co.uk/assessments/common-pre-tests/for-families/

Do any of you know about online group tutoring? Thank you.