Mainly primary school students or early years of comp. Firstly I would ask what the child is struggling with and go through things they don't understand. I would then take note of their curriculum and find resources like practice questions and papers to help solidify there skills. I completed my gcse years with 13A*s and 1A. I then went to coleg sir gar where I studied maths, biology, chemistry, epq and geography as level. I finished with an A in biology, A in epq, B in maths and a C in chemistry as well as an A in as geography.