I guess it changed from last year to this. I wonder if that has anything to do with the new SAT format coming out? I looked up Dartmouth, which was the other school I remember requiring SAT2s, and apparently they still do so. Weirdly, last year Princeton needed the SAT2 results for the academic pre read, while Dartmouth did not, because at Dartmouth the SAT2s were used for placement, not admission.
As of last year, the schools that did not require the SAT2s for admission (Dartmouth and Penn of the schools seriously recruiting my son if I recollect correctly) used the SAT1 scores instead of the SAT2 scores in the academic index formula, effectively counting those scores twice, just like on Varska’s Tier One calculator.