Technology has dramatically changed the way a language is taught and learned, it has also created new trends in English language teaching such as Computer-Assisted Language Learning. It has become so popular that recently-published textbook series, including Life begin to have their workbooks uploaded in online platforms. However, there have been only a few studies on how online workbooks benefit teachers and students and what issues they may cause in specific context. The study aims at filling in this gap by investigating the online homework of Life series. Through an interview with teachers and a survey with students at Faculty of International Studies – Thuongmai University, the research reveals both benefits and drawbacks of Life’s online homework software. Results of the study have provided suggestions for administrators to improve online homework systems and for teachers to take better advantages of the online assignments for students.