Polk Middle School had 21 students accepted into Early College High School next year. Â Early College High School is a partnership between the Carrollton-Farmers Branch ISD and the Dallas County Community College District. Â ECHS is an innovative high school located on the campus of Brookhaven College that allows students an opportunity to earn a high school diploma and 60 college credit hours. Â They received their acceptance letters from the Principal, Mr. Arreola on Friday, February 10. Â Congratulations!