A self-evaluation is a public entity's assessment of everything, including its programs, services, and activities; facilities; and current policies, practice and procedures. The self-evaluation identifies and corrects barriers to access that are inconsistent with its title II requirements. All public entities should have completed a self-evaluation by January 26, 1993. A public entity that employs 50 or more employees must retain its self-evaluation for three years. Other public entities are not required to retain their self-evaluations, but are encouraged to do so because these documents support a public entity's good faith efforts to comply with its title II requirements.
For additional information, take a look at the following resources:
Fact Sheet: ADA Title II and Title III Regulation and Fact Sheet Series [2]