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It is not sufficient to check Web pages using only an automatic accessibility tester (as described on the Accessibility Testing page). These tools may be able to point out obvious errors, but they cannot detect subtle problems. For instance, a validator can report that certain images on a page lack text alternatives, but it cannot determine if the "alt" statements that are provided are appropriate. Some accessibility questions can be answered only through careful human review.
Throughout its development process, Access Art was evaluated by a panel of Internet users with a variety of disabilities. The Project Advisory Group included people who are deaf and hard of hearing, blind and visually impaired, quadriplegic and mobility impaired, and learning disabled. Before the site was made available to the public, these individuals tested Access Art using their own computers and adaptive equipment, then made suggestions for improvement to the design team. Whenever possible, these suggestions were incorporated into subsequent revisions of the site.
Following the public release of Access Art, experts in the field of Web accessibility were invited to critique the site. Their comments have been overwhelmingly favorable, and further remarks are encouraged on the Contact page.