J.K. Rowling (/ʤeɪ keɪ rəʊlɪŋ/) is the principal pen name of Joanne Rowling (/ʤəʊ(w)æn rəʊlɪŋ/ - she also uses the name "Robert Galbraith"), British author of the best-selling fantastically fictional teenage-boy-wizard-based Harry Potter publishing phenomenon.
Rowling taught English as a foreign language in Porto, Portugal from c. 1991 until 1994. It was there that she started and wrote the first three chapters of the first of the Potter books, which have subsequently been extremely successful financially for her. With a net value of close to a billion pounds - and growing, it is likely that Rowling is the richest person who once pursued a career teaching English as a foreign language.
The Potter books are principally set in a Scottish boarding school. If anything can be said about the staff there, it is that they all have ridiculous names such as "Argus Filch, Filius Flitwick, Gilderoy Lockhart, Minerva McGonagall, Poppy Pomfrey, Quirinus Quirrell, Horace Slughorn, Pomona Sprout and Sybill Trelawney", etc. Many do not seem particularly competent at teaching, and at least one has severe mental health problems. This is intended as humour.