UCLA's approach is the opposite of schools like Columbia, NYU, and Harvard Business School, which require WES ICAP. UCLA handles credential evaluation internally, which means two things for applicants: lower cost and a simpler process. No WES fees ($200–$285), no waiting for WES processing (2–4 weeks), and no coordinating between your institution, WES, and UCLA.
If you are applying to both UCLA and a WES-requiring university (like Columbia GSAS or NYU Steinhardt), you need the certified translation for both — but the WES evaluation only for the other school. One certified translation covers UCLA directly and serves as the input for WES if you also need evaluation elsewhere.
The translation quality matters more at UCLA because there is no intermediary evaluator reviewing your documents between you and the admissions committee. At schools using WES, the evaluator provides a standardized report that supplements the translation. At UCLA, the admissions committee reads your translated documents directly. A clear, accurate, complete translation is your one shot.