The International English Language Testing System (IELTS) is a test that measures English proficiency in Listening, Reading, Writing, and Speaking. It is used for university admissions, professional licensing, and immigration purposes. There are two versions: Academic (for higher education and professional registration) and General Training (for work and immigration). IELTS is commonly taken by: 1. International Students: For university applications in English-speaking countries. 2. Professionals: To meet job or licensing requirements. 3. Immigrants: For visa or residency applications in countries like Australia, Canada, or the UK. 4. General Test-Takers: Anyone needing a formal assessment of their English skills for various personal or professional reasons.