Hello @GABaseballMom ,
Three points, all already mentioned above.
First, while we frequently use the shorthand term “curve” when discussing the SAT and ACT, neither test is actually graded on a curve. For more information, see the links below or find others with Google.
http://blog.prepscholar.com/how-is-the-sat-scored-scoring-charts
http://www.thecollegesolution.com/is-there-an-easier-sat-testing-date/
http://www.veritasprep.com/blog/2013/11/in-which-month-is-the-sat-curve-the-easiest/
https://■■■■■■■■■■■■■/wp/2011/02/is-the-sat-graded-on-a-curve/
The important takeaway is that students’ scores are not affected by the performance of other students who take the same test on the same day. That is, “an unusually large number of … test prep tutors” would not, in fact, affect students’ scores. Please do not take my word on this; instead, check the link above or find other information on your own.
Second, a College Board representative, Aaron Lemon-Strauss has already stated that concerns about equating and scaling (the proper terms for what we are calling the “curve”) were not motivating factors behind the decision to cancel the registrations of adult test-takers. This should be obvious, given the first point, above. (I can send you a private message letting you know where you can find the post from Lemon-Strauss, but it is in a LinkedIn group that you will have to join.) If the College Board itself says that “curves” were not an issue, then I think we can “dismiss concerns about the curve.”
Third, as already mentioned, the adult test-takers had their registrations moved from March to May. Even if there were concerns about the “curve,” how would transferring registrations from March to May solve the problem? This assertion does not make any more sense than saying the registrations were transferred to solve a cheating problem. Why is it better to have cheating in May than in March? Why is it better to have “curve” problems in May than in March?
Thus, in short, I “dismiss” concerns about the curve because (1) the SAT is not graded on the kind of curve you mean, (2) the College Board has said that concerns about the “curve” were not at play in its decision making, and (3) the question itself does not make sense, since transferring test-takers from March to May would only postpone any problems (whether cheating-related, “curve”-related, or anything else).
I hope that explanation makes my position clearer.