My full name is Chris Hendricks,I'm 25 with brown hair.-Will I stay in California or go.
You will eventually leave California . . . and may return at any time.\n\nFor example . . . you can go to Vegas . . . Gamble and then go home . . . . \n\nOr you can go to TJ on Spring break and then return . . . \n\nWhat I state is true . . . there will be times that you will leave the state you are living in and return after your vacation is over.\n\nI haven't met one person . . . who actually stayed in California all their lives without going somewhere. (I am not saying that there aren't . . . but there are not that many of them.)
The instructions for the form do allow for some leeway in the "how long do you plan to stay" question.  Still, you should call the office at your school that produced your I-20 form to make sure that they didn't make an error.  As you read, the I-20 specifically asks about the "normal" term of study.  If your school feels that 36 months is normal, put that on your DS 156.  But if you call them and they say that they made an error (which seems unlikely), then you should put whatever they tell you is the correct term of study.