"Of the 334,000 students registered to take the SAT on Sept. 26, 183,000 will not be able to take the test. And of the 363,000 registered to take the SAT or the SAT Subject Tests on Oct. 3, 154,000 will be unable to do so.
The students were told that they couldn't take the test because testing centers -- most of them in high schools -- were closed because of the coronavirus pandemic or had imposed new limits on students. The College Board, which run the exams, released information about the center closures and limited space Tuesday. Most students had already been notified but would not have known how many students were turned away.
Of test centers initially scheduled to administer the tests, 61 percent are open for September and 65 percent are currently open for October, though some have reduced capacity.
The closures and limited space issues follow similar problems that occurred during the August SAT, when 402,000 students were registered to take the exam or SAT Subject Tests, but 178,600 were unable to do so because so many testing centers had closed due to the coronavirus pandemic." ...https://www.insidehighered.com/admissions/article/2020/09/23/hundreds-thousands-who-registered-sat-unable-take-it