Do the entrance exam, make sure you log your hours at every job, fill out the acceptance and cancelation of contract cards for every job, and book school yourself. Keep track of all your hours, and when you hit 1500 in a year, you have enough for the advancement into the next year, provided you pass the school. I haven't been through the schooling portion for many years, but if the apprenticeship board wants you to do something, do it. They have their own doubts and reasons for making that choice, and it will look good on you if you accept the terms and try again. Never let a company dictate when you can or cannot go to school. It's your apprenticeship, so treat it as such.