45 CFR § 2522.720
How many years must my evaluation cover?
April 14, 2021
(a) If you are a State formula grantee, you must conduct an evaluation, as your State commission requires.
(b) If you are a State competitive or direct Corporation grantee, your evaluation must cover a minimum of one year but may cover longer periods.
[70 FR 39603, July 8, 2005]