TOEFL is one of the international English language tests organized by ETS Institute of Princeton University. TOEFL stands for Test of English as a Foreign Language and was first held in 1964. The TOEFL test consists of 4 skills: reading, listening, speaking and writing. This exam is held all over the world in 3 forms: CBT, PBT and iBT. The validity period of this exam is 2 years.