<p>How does this professor know you? If it’s from research you did together, fantastic. If it’s because he’s a family friend, it won’t add anything to your application.</p>
<p>It’s actually from a summer program hosted at the university( a small selective one you have to apply to, not just a summer school type thing that anyone who pays can go). So not a family friend, not really “research” but other academic type work- the program was based on my intended major.</p>