7 month old husky who still bites

Question
We got a Siberian husky when he was 9 weeks old. He is about 7 months old and still bites.  We took him to puppy school for 8 weeks and that is one habit he can't break. I understand they go through a teething stage but for how long?  We periodically give him ice to chew on but by now we should believe he should be done teething.  How can I get him to stop?  Every now and then I grab his mouth and tell him no firmly but then he thinks I'm playing.  What should I do?

Answer
This may sound mean, but when you grab him by the mouth and say no, do not let go (just remember he isn't being nice to you right now so your just being fair). Not till he stops wiggling around, if for only a second. Siberians are very pig headed and will continue to do whatever they want if they like the response they get.
By not letting go you make it an unpleasant experience. The mother dog usually bites down on there head in the same fashion and won't let go until they settle down, belive me he will understand what you are asking of him.
  He isn't doing the biting to teeth he is doing it to be a brat at this point.
-Michelle B ^^