Does learning too many languages affect the learning ability of child in anyway especially Mandarin since it's quite hard to learn. I am not sure if my 4 yr old should learn Mandarin in school. Will it be too hectic for him to learn a difficult language along with all the homework ?

kids who speak multiple languages have sharper cognitive skills and are able to focus and retain better. it is especially true of children before they turn 6, as they are at their highest point of grasping. if you feel your child already has a lot of homework and has a busy time at home after school, you can try enrolling him in a language class for may be 2 or 3 days a week and see how it goes.