Method over memorisation is the one thing that matters most
Most students who struggle with IGCSE Add Maths are not lazy. They have learned to copy worked examples without understanding the method underneath. It looks fine until the exam rephrases the question. When you speak to a prospective tutor, ask how they teach a hard topic. If the answer is "lots of past papers," that is drilling. If the answer is "we make sure the student can explain why each step works, then practise," that is method-first teaching. And that is what carries over to exam-style questions.
