That's why experts urge schools to give students with dyslexia extra time on tests, waive foreign language requirements and grade separately for creativity and spelling.

WSJ: Dyslexia Workarounds: How Henry Winkler, Gov. Dan Malloy, Delos Cosgrove Got Creative to Get Ahead

In his report, Sir Jim defines dyslexia as a "learning difficulty which primarily affects skills involved in accurate and fluent word-reading and spelling".

BBC: Teacher training to spot dyslexia