I strongly recommend for you to attend Cohort Tuition. While attending Cohort I have seen that many students only choose to take Mathematics and English. I would advise against this as science at Cohort is very useful for students wanting to reach the highest possible grades they can (7-9). As the productivity of work is very high as well as the standards and expectations of work and homework and the structure of lessons which allow you to understand the specification in a much simpler and easier way. Many past papers are given each week and any weaknesses are addressed and are perfected.