https://www.fcd-us.org/the-new-demography-of-americas-schools-immigration-and-the-no-child-left-behind-act/
The share of students in kindergarten through 12th grade with a foreign-born parent tripled from 6 percent in 1970 to 19 percent in 2000. By 2010, children of immigrants will represent over one-quarter of the student population. The linguistic isolation that many LEP children find in their schools is replicated in their homes. Six out of seven LEP students in elementary schools live in households where no one over age 14 is proficient in English. Most LEP students are natives. Three-quarters of those in elementary school and over half of those in secondary school are U.S.-born and many have U.S.-born parents.