The document discusses the definitions, history, and implications of Standard English, noting that it is the written variety taught to non-native speakers, unrelated to pronunciation. It highlights the evolution of Standard English from a multilingual Middle Ages to the class-conscious 18th century and emphasizes the importance of understanding Standard English in educational contexts. Ultimately, it stresses that proficiency in Standard English, while not requiring Received Pronunciation, can significantly benefit students in various aspects of life.