I have been teaching olevels/gcse from past 13 years and experienced marvelous results. I try to make things easy and as short as possible for the students to learn, i try to make them understand the topic in the class so they dont really have to study in home, instead a 25 min revision +past papers are enough for them. My lessons are interactive as well as friendly, well disciplined. No matter there are 2 students or 20 i make sure that at the end of the lesson each and every students understands the topic. My classes also include past paper practice.