It is widely acknowledged that early exposure to a foreign language significantly enhances lexical development, which is crucial for sustained fluency, particularly when children commence learning at primary school rather than secondary school. While some argue that younger learners benefit more from language immersion, others contend that older students possess more advanced cognitive faculties, which enable them to comprehend complex grammatical structures more efficiently. In this essay, I will evaluate whether the advantages of introducing a foreign language in primary education outweigh the potential drawbacks.