If I understand correctly, the theory is that students have an “ivy or bust” mentality, so if students can’t get in to an Ivy-level highly selective college, they instead choose to not attend any college? And test optional a key driver to that because test optional encourages more students to apply to Ivies, so there will be more Ivy-rejects who choose to not attend any college at all?
I expect this is extremely uncommon. Have you ever heard of any Ivy reject choosing to not attend any college at all due to an Ivy or nothing belief (not the same thing as being forced to take a gap year due to financial/family/medical/… issues)? Or have you ever seen any publication or report suggesting this is regularly occurring?
I don’t doubt that community college enrollment is notably down this year, as are the sum total number of applications from lower income students across all colleges . However, this does not mean that it has anything to do with Ivy rejects choosing to not attend college.
The reasons why in some years more or fewer students choose to attend community college are complex are multifaceted and often have strong dependence on external conditions. For example, if in a particular year a larger portion of families are struggling or there are a larger portion of good jobs that do not require a college degree, then a larger portion of students may choose to work after HS rather than pursue college. This relates to why the total number of students attending college is highly variable over time, with no clear correlation to number of Ivy applicants in that year or number of test optional colleges in that year.
Some example stats on 2-year college enrollment are at Recent high school completers and their enrollment in college, by sex and level of institution: 1960 through 2019 . Can you pick out the years with the largest increase in Ivy applications and/or largest increase in number of test optional colleges by the 2-year college enrollment changes? This most commonly cited primary reason for the large decrease in community college enrollment this year is effects of COVID (financial, jobs, medical, uncertainty, …)