<p>You'd think that College Board would be interested in making a bit more profit...</p>
<p>The main reason would probably be that the SAT/ACT are offered through participating schools/educational institutions, which are usually closed or open with a skeleton staff (or otherwise unavailable)—thus making it more difficult for the College Board/ACT to coordinate administrations at the national level and logistically challenging for school representatives to find appropriate staffing (proctors et al.). Secondly, most students are otherwise engaged during the summer and (unlike a number of CC’ers) are not anxious to spend a beautiful Saturday morning taking a test—thus reducing profits for College Board/ACT (trust me, they would see a noticeable decrease in sign-ups despite the same or even higher costs [educators would probably need extra compensation, overtime for support staff, renting alternative facilities if schools are unavailable, etc.]). Lastly (and probably least importantly), College Board/ACT realizes that most universities want real human beings with interests outside of academics and are thus subtly encouraging to engage in other pursuits over the summer. Even if College Board/ACT were inclined to offer tests over the summer (despite the plentiful opportunities to take these tests during the school year), they would probably be unable to because of the sheer number of logistical problems that would arise.</p>
<p>well said indeed</p>