The Adult Program marks the transition to more advanced and comprehensive English learning, suitable for older teens and adults. It utilizes the widely recognized "English File" textbook series, which offers 6 distinct levels: Beginner, Elementary, Pre-Intermediate, Intermediate, Upper-Intermediate, and Advanced. This program covers a broad spectrum of CEFR levels, from A1 to C1, indicating a significant depth and breadth of language instruction. Spanning approximately years 6-10 of the overall curriculum, it provides learners with extensive exposure to English in various contexts. The "English File" series is known for its balanced approach to language skills, likely offering comprehensive development in reading, writing, listening, and speaking, along with in-depth grammar and vocabulary instruction suitable for adult learners.