UK exam boards explained
Different schools use different exam boards for different subjects, and each board has its own paper format, mark scheme, and quirks. A tutor who knows the specific board your child sits is more useful than a generic subject specialist.
England
Why the exam board matters
An exam board (an "awarding body") writes the syllabus for a qualification, sets the papers, marks them, and awards the grades. Schools pick which board to use for each subject, so a child can sit one board for English and a different one for Maths in the same year. Each board has its own paper format and its own mark scheme conventions, and those differences are exactly where a tutor earns their keep. A tutor who has prepared students for the specific board your child sits is more useful than a subject specialist working from a generic syllabus, because they know what the examiners reward and how the marks are actually awarded.
Finding out which board your child sits
Board choice is the school's decision, not a parental one, and it varies by subject. The quickest way to check is to ask the class teacher or look at the school's curriculum pages. Past homework and textbooks usually name the board on the cover, and exam papers carry a specification code (for example AQA GCSE Maths 8300) that pins down the exact spec. Once you know the board and the spec code, you can ask any tutor whether they have taught it recently, which turns a vague "do you do GCSE Maths" into a question that tells you something useful.
What the board pages cover
The pages below are grouped by where each board operates across the UK. Each one explains what the board is known for, which subjects it tends to be strong on, and where to find its past papers and mark schemes for free. Use them to work out what "AQA English" or "Edexcel Maths" actually means before you start messaging tutors, then bring the spec code with you so the tutors you contact can tell you straight away whether they can help.