With the four tests listed, I am more familiar with IELTS. I feel that it is the best English proficiency exam since it is what is required in UK, Canada, Australia, and New Zealand. I am not familiar with language requirements in the US. Most Filipinos want to work/migrate/study in English speaking countries and passing the IELTS is a requirement. I am planning to take the test myself. The test has four sections: Reading, Writing, Listening and Speaking. Each test you will be graded from 0 to 9 and they will accumulate your band score. Band 9 means you are an expert user, 8 is very good, 7 is good, 6 is competent, 5 is moderate, 4 to 2 is limited, and 1 is user. You will get a 0 if you did not attempt.