Learning Difficulties are discussed within the Cognition and Learning section of the SEND Code of Practice:  0-25 - January 2015 (6.30 and 6.31):

"Support for learning difficulties may be required when children and young people learn at a slower pace than their peers, even with appropriate differentiation.  Learning difficulties cover a wide range of needs, including moderate learning difficulties (MLD), severe learning difficulties (SLD), where children are likely to need support in all areas of the curriculum and associated difficulties with mobility and communication, through to profound and multiple learning difficulties (PMLD), where children are likely to have severe and complex learning difficulties as well as a physical disability or sensory impairment. Specific learning difficulties (SpLD), affect one or more specific aspects of learning.  This encompasses a range of conditions such as dyslexia, dyscalculia and dyspraxia."

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