Yes. We have worked closely with the American Foundation for the Blind to make our content accessible (ada compliant). (For instance, SoftChalk lessons can be read by screen readers.)
We also have general information about SoftChalk's accessibility at: http://softchalk.com/products/softchalk/accessibility.
Please contact us as firstname.lastname@example.org for our SoftChalk VPAT (Voluntary Product Evaluation Template).