<p>During my freshmen and sophomore year, I participated in very little outside of school. Though I have a good explanation for this, is it too late for me if I start this year? (assuming I'm aiming for an Ivy League). Can an extra effort in my junior year make up for this?</p>
<p>they look for commitment, so no.</p>
<p>It can't hurt. It's better to look like you made an effort in your junior and senior years than to look like you just didn't care. Especially if there's a good reason why you didn't participate earlier.</p>
<p>I agree, I think that if you start making an effort to become more involved, etc., they will notice this. However, your reason for not becoming involved earlier should probably be a good one.</p>