Everyone makes mistakes and at times, anyone could struggle with following an oral or written direction. Especially as you are adjusting to a new school, you may forget rules or miss things here and there. Be honest about your ability to follow directions, but show some initiative in your answer by ensuring you will do whatever it takes to adapt to new and changing rules. Maybe you need to take notes during staff meetings or leave a reminder on your desk to make sure you remember something. Whatever it is that may help you, demonstrate that you can take initiative and be responsible for following through with the expectations.