teachers’ knowledge of language and children’s educational support. The particular focus is on children with speech, language and communication (SLC) difficulties, whose learning needs may by definition be clarified using linguistic analysis. This blog is about this large group of children: every primary classroom in the UK will have on average two or three children with some form of SLC needs (p.252, citing Lee 2008). Letts(Chapter Twenty) notes that many children with SLC also use English as an additional language, although that is not a causal factor in their developmental difficulties, and the complexities which arise.