In my opinion, primary school is better place for learning English language than secondary school. Some experts claim that childen between 4-9 years old have great opportunity to learn new languages. These ages play important role in childrens' building character and developing their personality. Also child's carefree mind can catch more points of English in this level. And experts' studies show that pupils who started to learn English language in secondary school speak good English. But those children who started to learn it in primary school have better English skills. But the most important role, of course, play teachers. Their methods and the whole school atmosphere.
