I think it depends on what school you are applying to. I’m a parent, not in admissions, but I’m sure you’ve read some of the same articles I have that it is harder for Asians to get into some schools that seek to maintain a certain level of diversity. Assuming this is correct, then self-reporting that you are Asian would hurt you at these schools. Since there is nothing wrong with not reporting your race, I don’t see any benefit of reporting it. Others may disagree with me, stating that you should be proud of whatever race you are, regardless of whether that helps or hurts you in the admissions process.