As Harvard goes test-optional, Princeton is only Ivy requiring SAT, ACT for applicants

"As of Monday, June 15, the University is the only Ivy League institution requiring applicants to the Class of 2025 to submit their standardized test scores for the SAT or ACT.

In an April 9 statement addressed to future Princeton applicants, Dean of Admission Karen Richardson ’93 confirmed that applicants must submit SAT or ACT scores, but stressed the importance of non-quantitative elements of applications and the ‘holistic review’ of the admissions process. On the matter of SAT Subject Tests, she wrote that although they are always ‘recommended but not required,’ this year in particular ‘applicants who do not submit subject tests will not be disadvantaged in our process.’" …

https://www.dailyprincetonian.com/article/2020/06/princeton-standardized-tests-2025

And as of today, Princeton is not only following suit with regards to test optional for SAT/ACT but are they setting a trend by removing the early decision round and opting to go with a single application round with a Jan 1 deadline?

https://admission.princeton.edu/how-apply/covid-19-update

Full updated policy as of 06.18.2020

With the Ivy League going test optional, does this apply to transfer students as well? Transfer students certainly have test scores, but given the current conditions, their ability to retake will certainly be inhibited? Also, how does going test-optional affect admission rates next? Will they drop, increase, or stay relatively the same?

Transfer students should not re-take the ACT or SAT once they are in college.

If transferring as a rising soph, HS test scores are generally part of the evaluation (in normal times). If transferring as a rising junior, college GPA is the focus and HS record (GPA, test scores) are often not evaluated at all.

If your intent is to transfer as a rising soph, look at the website/contact the schools on your list to find out how transfer applicants are evaluated.