There is an ongoing debate regarding when it should be started learning new languages although some folks believe that it should be taught later, in my opinion, new languages better be learning in primary school, because students could pick it up quickly and finer in early ages.
On the one hand, certain people contend that taught students foreign language in young age is a bad idea since children might feel pressured. More specifically, this feeling may caused by cognitive overload as struggling to abserb complex materials, or moving too quickly so pupil have not any time to consolidate it. For instance, researches show that, if too much information presented to brain, the efficiency of assimilation will decrease, despite the stress they acquire. From my point of view, learning a new language appears to complicated in early years.
On the other hand, early studying of a language is less difficult than developing it as a teenager or adult. This is due to the fact that, when brain is receiving a new information in early ages the process of grasping is more rapidly. For example, some studies proved that, it will get more challenging to learn a new language as people getting older. Moreover, early bilingualism has more advantages than beginning it later.
In conclusion, while some individuals do not recommend very early begin of subject, in my opinion, early begin is the best way to learn language properly and clearly. By early developing of language they achieve this effortlessly.