<p>"Can he apply for colleges, after the admissions, he pick one or two to visit? If he gets in his dream school, we don’t even need the campus visit? "</p>
<p>There are two purposes of visits. A. To decide where you want to go B To improve your odds of admission. </p>
<p>A. Can be done AFTER you know where you were admitted (we looked at Case AFTER DD got in), though if you are having trouble narrowing down the list to apply to, then that does not help so much
B. A visit shows interest, which is important to some schools, and can help you refine your supplemental essay to show why you are a good match. For those, you need to go before you are admitted.</p>