evidence: Roughly 3.8 million students in U.S. schools are native Spanish-speakers who are not proficient in English. They make up the bulk of the approximately 5 million students nationwide identified as English language learners, the fastest-growing demographic in schools – and the lowest-performing, as judged by achievement tests and graduation rates. [...] From 2000 to 2015, the percentage of Latino students enrolled in public elementary and secondary schools swelled from 16% to 26%. The percentage of white students fell from 61% to 49%, according to the National Center for Education Statistics. [...] At Oyster-Adams Bilingual School in Washington, for example, just 24% of students are English learners, according to school data.