AS in a Week is a timed revision programme based on the intensive one-week courses taught at the UK's most successful tutorial colleges. Designed to give you the best results in the shortest time, each section tests, improves and uses your knowledge. AS in a Week is a timed revision programme based on the intensive one-week courses taught at the UK's most successful tutorial colleges. Designed to give you the best results in the shortest time, each section tests, improves and uses your knowledge.