KooClass is suitable for children from ages 6-12, covering all primary levels. You can find the recommended age-ranges for each lesson on the thumbnails as shown in the image below.
Please note that the age-ranges are only a recommendation. The goal of KooClass is to enrich kids' learning beyond the standard school curriculum and foster a genuine interest in learning. Hence, we encourage kids to pick and learn from whichever KooClass sounds most interesting to them.