TOEFL is an English proficiency test administered by ETS that measures reading, listening, speaking and writing skills. It was developed in the 1960s to assess English abilities of non-native speakers applying to universities where English is the primary language of instruction. The test is now delivered online and takes 4-5 hours to complete. Scoring well on the TOEFL is required for admissions at most American, Canadian, Australian and New Zealand universities. Test preparation involves practicing each section, taking mock tests, and becoming familiar with the online format. Registration is done on the ETS website and costs $165 per exam.