One of my mates wants to do the whole edexcel geography a-level in the summer, starting learning/revision at the beginning of april. They would only have a couple of other exams from other subjects.
They are reasonably intelligent and hardworking, but I told them 4 units is a lot of work for such little time. They aren't attending school either, so I suppose they would be able to put in around 5 hours on learning the content each day.
Thanks