It can add a common measure
Tufts can read an SAT or ACT beside students from very different high schools. The score may clarify academic preparation when the local transcript is unfamiliar, but its meaning still depends on course access and performance.
It cannot replace curriculum
The helpful-score question changes between engineering, liberal arts and an SMFA portfolio pathway, so the same composite should not trigger the same decision for every applicant. Admissions readers can see whether the student pursued the strongest appropriate sequence; a composite does not manufacture missing preparation.
It can reveal a section imbalance
Tufts superscores both exams; ACT Science and Writing are optional. A section-level plan is therefore more useful than repeatedly chasing a round total without diagnosing the limiting skill.
It cannot predict admission
Class of 2029 submitters reported 730–770 SAT Reading and Writing, 740–790 Math and 33–35 ACT. The cohort contains admitted students, not a mechanical rule. Students below, inside and above a range can receive different decisions because the application is broader.
It can guide timing
Tufts accepts self-reported scores and verifies them after enrollment. The useful final sitting must leave enough time for the route Tufts accepts and for the applicant to confirm that the checklist is complete.
It cannot freeze the policy
For Tufts, current undergraduate policy describes the verified scope. Testing policies, optional sections and reporting instructions can change; the application term must remain attached to every operational decision.