As of my last update in October 2023, states with the highest percentages of English Language Learners (ELLs) in public schools typically include California, Texas, New York, and New Mexico. Among these, California often has the largest number of ELL students due to its diverse population and high immigration rates.
In terms of percentages, states like New Mexico and Texas often report a significant portion of their student population as ELLs. However, exact rankings can vary over time, so it's advisable to consult the latest data from the U.S. Department of Education or other educational statistics sources for the most current figures.