Ongoing evaluation is essential to determine, 'Are we doing the right things right?' and 'How can we make this work better?' Evaluation is the process of determining the effectiveness and efficiency of practices and plans (Russell & Morwen, 2005). Through evaluation, the organization will be able to determine the impact the accessibility management program is having on its visitors and participants with disabilities, their family members, and friends. Moreover, a systematic evaluation will enable the organization to determine the greater impact within the community of accessibility improvements in its parks, facilities, and programs. According to Russell and Morwen (2005, p. 656), evaluation helps managers to: determine that funds are wisely spent; examine the vitality of the organization's mission and objectives; conduct services efficiently; determine the impact of services on those who use them; learn how to redirect service efforts; reinforce staff efforts or recommend new directions; assist policy makers in directing the organization toward productive channels; evidence the strengths of services, which provide motivation to program participants and potential users of organization services; project positive public relations; help others anticipate problems in implementing similar services; and protect the interests of those with limited intellectual ability who cannot otherwise complain or judge service quality.

Outcome evaluation. At a minimum, every accessibility improvement should be evaluated by the access team and users with disabilities to determine if the construction, alteration, program adaptation, or policy change is effective and usable. There is no sense moving on with other accessibility improvements until the access team knows that what has been done so far is effective for its intended users. Imagine installing ten automatic doors throughout a facility at $20,000 each only to learn that when opened manually, they are too heavy to open for users without disabilities. What was designed and installed to create access for one user group, created a barrier for another.

Process evaluation. As noted previously, the implementation of an accessibility management program is as much a process as it is a final destination. In many instances, the process will become just as significant as the final product. Therefore, the process should be continually evaluated for effectiveness and efficiency. Is this working? Are we achieving or exceeding our stated goals? Are all of the key stakeholders involved and moving toward the same common goal? What is missing? How can we make this work better? It is only through the evaluation process that we can determine if what we are doing is truly making an impact, both externally to our citizens and internally to our employees.