You cannot answer: "I follow no school". You can answer: "I do not follow any school".
@dp2011 "Tibetan" is not a school of Buddism. Yes, I know what you mean, I'm just being pedantic (again)!
"When one is not in accord with the true view Meditation and conduct become delusion, One will not attain the real result One will be like a blind man who has no eyes." Naropa - Summary of the View from The Eight Doha Treasures