So you want to not give a crap about school because your friends are? Get new friends, that actually care about school. If you want to have a successful life, have a job, and support yourself you better try in school. If your teacher said that you would fail right from the start, prove them wrong, a teacher should not be saying stuff like that to students because it can make them have low self esteem and it will make them more likely to fail. Try your best, and don't give up!