Pulling out in front of a white van

Few days ago my student was on a driving test in Goodmayes East London. He emerged from the side road to turn left by pulling out, which made the driver slow down a lot (small gap). This student failed with 1 serious fault and 4 minor mistakes. Later I asked him, "why did you pulled out". He said "Noel this test is just one money making schemes, you can't drive like they want, its not normal! The van was far away so what if he slows down a bit". All the things we the driving instructor teach has a small affect on their over all road attitude from this observation. No wonder young drivers pay such a high insurance premium.