I think these classes are great for toddlers to get them started and comfortable in learning Mandarin Chinese. The material is animated, and it introduces toddlers to key vocabulary. One of my daughters started at 2 years old and the other two when they were 4 years old. I think it helps to review in between classes, because repetition is key, and to also give them additional exposure. The teachers are also great and always do their best. Siyan, Yang, and Sasha were wonderful teachers! They were very patient and great at reviewing with the girls and making sure they were engaged, interacting, and speaking. Their Customer service is also great and I was able to speak to a representative on the phone if needed.