Prescriptive linguistics is a branch of linguistics that focuses on establishing rules and guidelines for how language should be used. It aims to promote a standard form of language, often based on traditional grammar and usage. This approach is commonly seen in educational settings, where teachers emphasize correct grammar and vocabulary to help students communicate effectively. Unlike descriptive linguistics, which observes and analyzes how language is actually used in various contexts, prescriptive linguistics advocates for specific norms. This can include rules about syntax, punctuation, and spelling, often reflecting the preferences of certain language authorities or style guides.