Enlgish that follows the rules and standards found in grammar composition books is called?

English that follows the rules and standards found in grammar composition books is called Standard English.

Here's why:

* Standard English refers to the form of English that is widely accepted as correct and used in formal writing and speech. It's based on the grammatical rules and conventions that are documented in grammar books and dictionaries.

* Formal English is another term that often overlaps with Standard English. It emphasizes the use of proper grammar, vocabulary, and sentence structure, often found in academic writing, professional communication, and official documents.

While there are many variations of English spoken around the world, Standard English serves as a common ground for understanding and communication, particularly in formal settings.