On the one hand, various drawbacks may be noted.in the first place, learning a second language in elementary school is hard for some students who are not intelligent. due to the fact that the level of clever in the whole of pupils is not the same. For example , regarding the 2021 research in, Iran 30 per cent of kids do not understand the new accent . Added to that ,not only taking ne language at an earlier age is easier for offspring , but also it can have an effect on kids. In other words, while getting the new lingua franca leads to knowing the new local culture , it has an effect on their attitudes. Sometimes those effects maybe have negative impress. For instance, In Italy ,there is a number of slang words or customs which is negative to children.