I believe patience is key. I have two methods I'd prefer to use; one if you are wanting to boost exam grades and another if you want to understand the subject in more detail. If more grade-focussed sessions would revolve around past paper questions and how to answer them, improving those answers and the method in which to approach questions in exams. If you are seeking a further understanding I have a deep passion for chemistry and will be explaining in various different ways - as sometimes all it takes is an alternate perspective. Content would follow current schoolwork with a focus on more problematic topics.