No, that’s the beauty of it. Teachers use a variety of methods called ‘sheltering techniques’ to help children who are working in their second language understand the curriculum. Again, the children will not be able to show all that they are learning until they begin to master their second language, which takes several years. For native English speakers, learning another language enhances a child’s English ability. Children can learn much about English by learning the structure of another language. Common vocabulary also helps children learn the meaning of new words in English.
Experimental studies have shown that no long-term delay in native English language development occurs in children participating in second language classes, even in full immersion programs. In fact, children enrolled in foreign language programs score statistically higher on standardized tests conducted in English. A number of reports have demonstrated that children who have learned a second language earn higher SAT scores, particularly on the verbal section of the test. One study showed that by the fifth grade of an immersion program, students outperformed all comparison groups and remained high academic achievers throughout their schooling.