It might if you're applying to a bunch of places and you're worried about getting in and writing submission essays etc. I found the school I wanted, applied just to that school since I knew I'd get it, and got my acceptance letter in October. If you're applying to Harvard, there might be more stress. But here's all the ways senior year is good: 1. If you're like me, you're less stressed than everyone around you, which is fun in a slightly mean sort of way. 2. A lot of your requirements are done. I got to take an easier math (stats), drop science entirely, and take a language for only half the year. Except for english and any other four-year requirements, you can pick your subjects (or at least you could in my school - not like take 5 gym classes, but I took more electives like arts and english-department classes). By the same token, the AP classes you have left are probably those you enjoy. 3. You get done with whatever college prep stress you're going through and can relax. Those are the three I can think of. For me, it was mostly #2. Rather than taking science, which I struggled with, I ggot to take AP Art History, which was one of the best classes I've ever taken. I was able to drop Spanish for a journalism class. Stuff like that makes it easier on you.