<p>I’m pretty sure it’s all four years-- although I didn’t even come close to getting it, so I’m not 100% sure. And 3.8 is really high, but only a very small percentage of princeton graduates pbk–so a 3.8 is about top 10%. (this is post grade deflation, I graduated in 2008). A much much larger percentage of the class graduates with some kind of honors (in my department it was ~50%)</p>