OK, but what about the ones born here who can't speak English.
That's what school is for ... to learn how to speak English properly. A lot of children who are born in the USA have parents who are ESL and have spoken to these kids in their native tongue since the day they were born. They have to get the experience in school.
I had a student who came to me straight from Russia at age 5. She was not in the USA for more than 2 months before she started Kdg. I had to teach her English. Her mother spoke broken English and she would converse w/her DD in Russian. I was afraid that, w/school being the only place she'd speak English or hear it, that she'd have a difficult time picking it up. It was difficult for her at first to be in a foreign country, not knowing the language, alphabet, letter sounds, numbers, etc. and having to learn these things in such a short amount of time. But, she did it. I remember holding up a crayon saying "crayon" and have her repeat the word. Then, I would color with it and say "blue". She learned it. She learned to sound out letters and blend them to read words. She left my Kdg. class w/a good command of the English language and was able to sound out and read English. Sure, she has an accent and prob. always will ... but she speaks English w/an accent and you can understand her. Thankfully, she has classmates in the neighborhood and she can practice w/them. Her mom speaks broken English and I'm sure that's of some help as well.
That's where the difficulty lies -- some children go home to families who speak to them ONLY in their native tongue b/c it's all the parents know how to speak. The kids don't get the "extra" practice that they may desperately need. Often, the kids are the translators for their parents at parent-teacher conferences, etc.
It's often left up to us teachers to help these children get the English language and comprehension education that they need. As much as we try, we don't have all the time in the day to focus primarily on English nor do we have the ability to work on it at home w/them. We do our best in the alloted time we have. We hope that the school socialization will help them become competent w/the language.
We are finding that the area that our school is in is becoming a home to many immigrant families. We're seeing more ESL students coming into our school than we have in years past. It's pretty amazing -- two years in a row, I have had ESL students. Two years in a row, our enrollment of ESL students jumped. One year, we had 4 ESL students enter, last year we had another 4 enter. That's ESL students in a school of 125 students. Four years ago, our school didn't have any ESL kids. While the area is changing, we are doing our best to adapt these kids to the English language and getting them to speak and use proper English. We don't have ESL classes b/c we're such a small school.
The biggest problem that I have to deal with, it seems are the kids who DO speak English as their native language but have terrible grammar and choose to speak in Ghettoese. "She ain't gots none". "He gots my pencil." "Hims Mom is coming to get him" "They's don't got lunch today" Huh? What? Those kids were born in the USA and my ESL's have a better command of English than they do!!