The University of California is suspending the SAT as a requirement for admission until at least 2024.

This is a major blow to the College Board, which owns and administers the SAT.

In a major decision that could lead to a shake-up of the nation’s standardized testing landscape, University of California President Janet Napolitano is recommending the suspension of the SAT and ACT tests as an admissions requirement until 2024 and possible elimination after that — a move that could widen access to a UC education for disadvantaged students.

In a proposal posted Monday, Napolitano is recommending a complex and unusual five-year plan that would make the tests optional for two years and eliminate testing requirements in year three and four. Then, in year five, UC would move toward a standardized assessment developed specifically for the 10-campus system.

The plan would produce rich data on which students get admitted under each strategy and how they perform in college. But it could be challenging for campuses to implement and raises concerns about different entry standards for different classes.

The recommendation is not completely in line with the Academic Senate, which recently voted unanimously to keep the tests for five years while alternatives are researched. But Senate Chair Kum-Kum Bhavnani expressed appreciation that Napolitano adopted many key recommendations in a faculty task force report on testing, including development of a new assessment for UC.