The International English Language Testing System (IELTS) is the worlds leading test of English for higher education, immigration and employment. It checks your English proficiency reading, writing, listening and speaking. The IELTS test is developed by some of the worlds leading experts in language assessment. It has an excellent international reputation, and is accepted by over 7,000 organizations worldwide, including schools, universities, employers, immigration authorities and professional bodies. Uniquely IELTS tests your English conversation skills through a face-to-face Speaking test which means that you are assessed by having a conversation with a real person. This is the most effective and natural way of testing your English conversation skills.
The SAT reasoning test is for high school (10+2 or equivalent) students who wish to study BA/BS (undergraduate) degree in the USA. This test helps students to compete for scholarship/financial aid and helps in increasing the performances of students in the undergraduate level. It has three sections: Critical Reading, Mathematics and Writing Skills.