High School English Verification Letter: If you have attended an American High School either on foreign soil or in the U.S. for at least three years provide an Official Letter from Principal or Head master stating level of proficiency. TOEFL (minimum score of 133 on the computer-based test, or 450 on the paper-based test, or 45 on the Internet-based Test). IELTS (overall band score of 4.5 or higher).