The organization National Center for Educational Achievement (NCEA) a/k/a Just 4 kids determined the following 3rd graders are in high performing schools. There is also a list for upper elementary, a list for middle school and a list for high school.
3rd grade analysis looked at reading and math. The methodology is a bit more involved than just looking at 3rd grade TAKS scores. It also considered demographics of the group and if the group performed better than predicted or not based on those demographics. (I think that's a way of saying they compared the schools to other schools with the same demographics to see how the school was doing relative to its peer schools.) It only considered test scores from students who had been in the school or district for at least 3 years. http://www.just4kids.org/en/texas/higher_performing/elementary_schools.cfm
District
School - area(s) in which the 3rd grade is high performing
Allen ISD
Bolin - math
Boon - math
Green - reading
Norton - math and reading
Kerr - math
Arlington ISD
Ashworth - math and reading
Pope - reading
Carroll ISD
Carroll - math and reading
Durham - math and reading
Johnson - math and reading
Old Union - math and reading
Rockenbaugh - math and reading
Carrollton-Farmers Branch ISD
Country Place - math
Kent - math and reading
McCoy - math and reading
Rainwater - math
Sheffield - reading
Cedar Hill ISD
Lakeridge - math and reading
High Point - math and reading
Coppell ISD
Austin - reading
Denton Creek - math and reading
Lakeside - math and reading
Mockingbird - math and reading
Pinkerton - reading
Town Center - math
Valley Ranch - math and reading
Wilson - math and reading
Corsicana ISD
Bowie - math
Dallas ISD
Adelle Turner - math and reading
Casa View - math
Rice - math and reading
Pease - math and reading
Seguin - math
Botella - math
Peabody - math
Cueller - reading
Thompson - math
Starks - math
Bonham - math and reading
Fannin - reading
Brashear - math
Frazier - math
Lakewood - reading
Kahn - reading
MLK - math
Harlee - math
Lanier - reading
Marsalis - reading
Anderson - math and reading
DeSoto ISD
Woodridge - math and reading
Duncanville ISD
Hyman - math and reading
Acton - math and reading
Smith - math and reading
Fairmeadows - math and reading
Merrifield - math
Alexander - reading
Ennis ISD
Austin - math and reading
Bowie - math
Houston - math and reading
Travis - math and reading
Frisco ISD
Bledsoe - math and reading
Boals - math
Borchardt - math and reading
Corbell - math
Curtsinger - reading
Fisher - math and reading
Riddle - math and reading
Smith - math
Sparks - reading
Spears - math and reading
Garland ISD
Glen Couch - reading
Hillside Academy of Excellence - math and reading
Armstrong - math and reading
Kimberlin Academy of Excellence - math and reading
Pearson - math and reading
Northlake - math
Toler - math
Grand Prairie ISD
Bonham - reading
Dickinson - math
Moore - math
Houston - reading
Grapevine-Colleyville ISD
Bransford - math and reading
Colleyville - reading
Heritage - math
Taylor - math
Timberline - math and reading
Highland Park ISD
Armstrong - math and reading
Bradfield - math and reading
Hyer - math and reading
University Park - math and reading
Hurst Euless Bedford ISD
Harrison Lane - reading
River Trials - math and reading
Wilshire - math and reading
Irving ISD
Hanes - math
Keller ISD
Hidden Lakes - math and reading
Liberty - math
Willis Lane - reading
Lewisville ISD
Bridlewood - math and reading
Flower Mound - reading
Liberty - reading
McAuliffe - reading
Wellington - reading
Lovejoy ISD
Lovejoy - math and reading
Hart - math and reading
Mansfield ISD
Anderson - reading
Spencer - math
Tipps - math
Tarver-Rendon - math
McKinney ISD
McNeil - math
Burks - math
Eddins - reading
Bennett - math
Wolford - math and reading
Wilmeth - reading
Walker - math and reading
Valley Creek - math and reading
Webb - math
Mesquite ISD
Galloway - math
Plano ISD
Andrews - math and reading
Barksdale - math
Beverly - math and reading
Boggess - math
Brinker - math
Carlisle - reading
Gulledge - math and reading
Haun - math and reading
Hickey - math
Hightower - reading
Huffman - reading
Mathews - math and reading
Miller - reading
Saigling - math and reading
Skaggs - math and reading
Stinson - math and reading
Wyatt - math and reading
Richardson ISD
Brentfield - math and reading
Hamilton Park - math
Math/Science magnet - math
Mohawk - math
Northrich - math
Prairie Creek - math and reading
Spring Creek - math and reading
Wallace - reading
White Rock - math
Rockwall ISD
Parks-Heath - math and reading
Harman - math
Sunnyvale ISD
Sunnyvale - math and reading
Waxahachie ISD
Dunaway - math
Wedgeworth - math