Why is TOEFL important?
Academic language is often dense and formal, so even people who’ve studied English for many years can struggle in an English academic environment. Before a university accepts you into an academic program, the admissions board wants to know that you can handle the course load of an English-based program: they use your TOEFL score as a standardized metric for your English skills.
If you’re an international student applying to schools in a country where the primary language is English, you’ll most likely be required to take the TOEFL as part of your application. Many schools accept scores from other English tests as well, but the TOEFL is currently the most popular English-language assessment test.