In my opinion I do believe that learning a second language in early age has many benefits especially when it comes to brain development. On the contrary, I also believe that even though the benefits are there children at this age may still find it hard to grasp the idea of language structures due to their still limited cognitive capacity. So it may be very difficult to teach them a second language unless you find a qualified second language teacher who is able to get the job done which might be costly. Some people believe that they can do it themselves but teaching the little ones is much more complex than it looks, sometimes it takes a professional, who has been trained to get the job done. Without qualified teachers, children will not be able to optimize their learning. Even though I agree that there a many positive benefits, the disadvantages should not be ignored. Having your children learn a foreign language at primary school may lead to confusion in acquiring a native language. Remember that your children are still learning or in the process of establishing their native-tongue at this point in their life.Having them take another demanding task such as learning a new language, not to mention other school functions, can lead to cognitive overload. This is when children will be unable to process the information as too much can become overwhelming. However if you do manage to hire a professional qualified teacher then it may actually promote brain development instead of causing confusion.