Should I send this letter to my sons school in regards to the Obama portrait in my 10th grade sons math cl?

You'll get nowhere with an anonymous letter. You'll only cause trouble for your child because it will be found out where the letter comes from. If your child knows that you've sent the letter then he/she will tell friends and it will go on from there. You'd be better off to talk to the teacher directly. The teacher will certainly have more respect for you if you do this rather than go over his/her head and straight to the administration. You need to remember that this is just a picture, and I plan to have one of the President up in my clroom (even though I voted for McCain). Is the teacher preaching the ideas of the Democratic party? If not, get off of your high horse and find something else to complain about...something worthwhile, perhaps?