An analysis by the University of Colorado system has determined that some admissions programs and up to about 100 donor-sponsored scholarships would need to be altered if state residents vote this fall to ban public colleges and other state and local agencies from granting affirmative-action preferences.

A statement issued by the system says that its undergraduate and graduate admissions programs now involve two levels of review. Race, ethnicity, and gender are considered “secondary qualifying factors,” but their consideration would be ended if the ballot proposal, known as Amendment 46, passes. (Other “secondary qualifying factors,” such as work or research experience, socioeconomic background, legacy status, and first-generation college status, could still be considered.)

The statement says it remains unclear how the proposed ballot measure would affect about 100 donor-sponsored scholarships, mainly at the system’s Boulder campus, that are awarded based on eligibility criteria that consider gender, race, or ethnicity. Should the measure pass, the statement says, the system and its foundation would work with donors “to preserve the spirit of their financial contributions” while complying with the law.

The statement says that the measure’s passage “would have no effect on outreach programs aimed at recruiting high-school students, or campus services such as academic or career advising, orientation, and tutoring, because these programs are open to all students.”

The system’s statement quotes its president, Bruce D. Benson, as saying that, whether or not the measure passes, the system “will continue to regard diversity in all its forms.”

The Daily Camera, a Boulder-based newspaper, reported on Thursday that the chairman of the system’s Board of Regents had donated $400 to the Colorado Civil Rights Initiative Committee, the campaign group backing the proposed amendment. —Peter Schmidt