TPO stands for "Test of English as a Foreign Language" and is commonly used to assess the English language proficiency of non-native speakers. It evaluates skills in reading, writing, listening, and speaking, helping institutions determine a candidate's ability to succeed in an English-speaking environment. The TPO is often utilized by universities and colleges as part of their admission process. It is designed to measure how well individuals can understand and use English in academic settings, making it an important tool for students from countries where English is not the primary language.