<p>Yup. I knew 100% where I wanted to go, and I knew I would get in and be offered money as well. It would be a waste of my time and the adcoms time to apply to any others.</p>
<p>I know one person who got into Duke ED. No need to apply to any other schools after that!</p>
<p>I also know someone who got into Yale EA, I don't think he applied anywhere else after he got his acceptance.</p>