“While at a U.S. high school, international students can sharpen their English and get familiar with American academic culture. … Here are two ways attending high school in the U.S. can prepare prospective international college applicants.” …
I also agree with you. If teenagers attend the U.S high schools, they will know more American culture and they can speak English language like their native languages. Thank you for providing link us to know the more information about education in the U.S.