Review of Khan Academy

Khan Academy Reviewed 15 Jul 2014 · Average score 86%


The Khan Academy site felt very easy to use and has simple question /answer sessions at the end of many of the topics evaluated. The videos were captioned and available via YouTube. They were keyboard accessible and all the text on the site was easy to read other than some smaller areas with low contrast areas. There is a <a href="">download area for further resources and links to their apps</a>.

Detailed Results

# Test Outcome Notes
1 Login, Signup and Other Forms Accessible 67% Keyboard access/tabbing works logically. It is possible to sign up via email, Facebook or Google. Forms are mainly labelled and NVDA read everything even those missing labels.
2 Image ALT Attributes 33% Some icons and images on the main page do not have Alt attributes. Also, there is no way to add a description to the picture you are uploading.
3 Link Target Definitions 100% Most links are understandable and fully appropriate. No duplicates are mentioned (WebbIE).
4 Frame Titles and Layout 100% No frames are found within the website.
5 Removal of Stylesheet 100% Content and navigational elements are accessible and structured. (WAVE).
6 Audio/Video Features 100% Most videos are Youtube based and they do provide captions and text descriptions.
7 Video/animations - audio descriptions 67% Audio description can added only through Youtube, but not the website itself.
8 Appropriate use of Tables 100% No tables are found within the website layout.
9 Tab Orderings Correct and Logical 100% Good and logical tab order.
10 Page Functionality with Keyboard 100% Generally good accessibility via keyboard.
11 Accessibility of Text Editors 100% No rich text editors available on the website.
12 Appropriate Feedback with Forms 100% Very good and appropriate feedback from the forms.
13 Contrast and Colour Check 33% Green color over white background fails the contrast test (CCA).
14 Page Integrity when Zooming 100% Readability unaffected when zooming and the layout is responsive to changes.
15 Text size, style, blinking elements and Readability 100% Text is generally 12pt, sans serif font. There is no flashing or blinking content.