The document discusses the Teaching Knowledge Test (TKT), an internationally recognized certification for English language teachers. TKT has three modules that test teachers' knowledge in different areas of English language teaching without assessing language skills. It can be taken one module at a time and reports results on a pass/fail basis. The document provides details on the content and format of the modules, who TKT is for, and resources for preparing including Cambridge ESOL and Pearson TDI interactive online materials.