Biiv, you shouldnt have reacted any other way than your natural reaction. you shouldnt feel a certain way, or think you should, because you dont.

you are numb to him because he has hurt you so much in the past that you are now guarded against it, you are strong, and the walls you have built between the two of you wont be destroyed anymore... definately a positive sign that you reacted that way.

so what if he doesnt rate you highly, we all do. i think you are doing great in school and you have got a great future, so what if your dad doesnt agree, hes obviously full of so much resentment for the way his life turned out that he is trying to take it out on the nearest person, which at the time was you.

just continue being yourself, and if he says something that hurts or upsets you, let him know. just act naturally.

take care

simon