TOEFL: (Test of English as a Foreign Language)
TOEFL iBT is an English language proficiency test that is used to assess proficiency in English of those speakers whose inborn language is not English.TOEFL iBT is administered by the ETS via the internet to students opting to study in English speaking countries. TOEFL is a requirement for university admissions in the USA and other English Speaking countries to meet the language proficiency requirement. TOEFL iBT Test scores are accepted by more than 9,000 colleges, universities, and licensing agencies in 130 countries. The TOEFL iBT Test assesses four basic language skills: Listening, Reading, Writing and Speaking. TOEFL scores are valid for two years. TOEFL scores are valid for two years.
You are advised to visit https://www.ets.org/toefl for the detailed information.