Benefits: 1. Online learning can help to level the playing field by providing everyone with the equivalent educational resources. 2. Online learning can be more cost-efficient and timesaving for learners. Disadvantages: 1. The engagement between teachers and students can be decreased through online learning 2. The outcome of learning can be more uncontrollable, because it is easy for students to play tricks on(during) an online class. Generally, I think online learning is more suitable for senior(adult) learners who have a clear study plan and can be self-disciplined. Junior learners like kids still need a teacher on standby to lead(supervise) and help them.