In my opinion, when a child is old enough to speak, they are old enough to start learning a second language. Most of the bilingual speakers I know of grew up in homes where English and Spanish were used equally. They knew them from birth. Starting them in school at a young age would be a great head start.
Children learn a lot quicker when they are taught at a younger age therefore it would be more benefficial to teach them different languages at ages, 4 or 5. This would also help students in the future because they can communicate with more people, making them more social. Also, many children learn faster at a younger age which can help them speak new languages fluently in the future.
No, kindergarten and pre-school is not too young to teach bilingual education, because that is where students learn best. Language is something that children are learning naturally at that age. They will learn better than they will at a later age. It should be a part of the daily program in young education.
I do not think this is too young to begin bilingual education. In fact, the earlier the better when it comes to teaching children multiple languages. My girlfriend's daughter is from Chile, and went to a bilingual school. She was fluent in English by the age of 8, and sounds like a native now.
Children actually learn languages most readily before age
six. So learning a new language in preschool would be an excellent way to
increase the tiny numbers of native-born Americans who can speak any language besides
English. This would be a great advantage to such children throughout their
lives, and an advantage for their future employers as well.