ADHD itself is not a specific learning disability but because ADHD affects concentration and focus, this obviously makes learning more difficult. If a specific learning difficulty is also present this will compound the problem further.
The specific learning disabilities common in children with ADHD are difficulties with language, reading, writing and maths. It is vital that these be diagnosed in addition to ADHD in order for these problems to be supported.
A child whose achievements are falling below what would be expected for their age, intelligence level and prior schooling needs specific, individually administered, standardized testing to diagnose potential learning problems.