It is a US Certification specially designed for people who want to study in USA. More than 5.000 High-school institutions, universities and certification agencies and exchange programs from about 130 countries in the world accept TOEFL results to measure your language skills, among them:UK, Canada, Australia, New Zeland and USA. It is an online exam in the accredited centers. This TOEFL exam is useful for academic and job purposes, especially in US.
Although it depends on the University or concrete program, an acceptable mark would be from 80 marks upwards (maximum 120 marks)