I entirely agree with the above. I won't repeat what Shiv has said but would like to add that Red didn't help me much at all. There is too much emphasis on classroom training for Part 1 of the test. Too few sessions to help pass Test 2 and very little to help with passing Test 3 which is the most important one. They give you 40 hours training, work that out, that's a week's worth but not all in car training. I thought they were said they "train you to be an INSTRUCTOR". Not so, you are left to get on with it basically. Get out there and practice practice practice. how can you practice if you don't know what you are doing, or whether you are doing it right? Asked for extra sessions but only if availability allowed it, which it didn't. I don't expect to pass first time due to lack of tuition but I WILL pass my test under my own steam and determination, not from the so-called training they have given me.
For all you would be driving instructors, my advice to you would be to try a different training school and make sure you know what they are offering in terms of training you to be an INSTRUCTOR. That is the hardest bit. You might think you know how to teach but you need to learn how to teach the way the examiner wants you to, not your way!!!