I only took one driving session and I was told to have at least 10 more sessions. I took the test the week after that and passed with no comments or remarks. This is interesting since there were so many shortcomings listed by the instructor from the traffic school during the single session. He concluded that I at least need 10 sessions possibly even more to be able to pass the test! I have been driving for more than 10 years without a ticket or accident in different countries and realized that this can not be true!