<p>Most of the programs on that list are actually not free. For example, the programs under the headings “Science & Research Programs” and “Math Summer Programs” (with a couple exceptions) typically cost in the range of $3000-$4000. RSI, MITES, and Clark Scholars are the ones that are actually free (there may be a couple others that I do not know of).</p>
<p>The programs that cost in the $3000-$4000 range usually do offer scholarships to accepted students who need it, but this will rarely if ever bring the cost to $0.</p>