Average SAT scores - this was created in 2008 and is based on scores from the 2005-2006 school year, so it's a bit dated.
Combined SAT score - School District
1188 - Highland Park ISD
1149 - Plano ISD
1119 - Carroll ISD
1113 - Coppell ISD
1097 - Gunter ISD
1094 - Grapevine - Colleyville ISD
1087 - Lewisville ISD
1086 - Argyle ISD
1071 - Allen ISD
1066 - Richardson ISD
1059 - Carrollton-Farmers Branch ISD
1056 - McKinney ISD
1054 - Frisco ISD
1045 - Rockwall ISD
1040 - Prosper ISD
1037 - Keller ISD
1035 - Pilot Point ISD
1032 - Weatherford ISD
1030 - Northwest ISD
1023 - HEB ISD
1020 - Arlington ISD
1019 - Celina ISD
1018 - Burleson ISD
1012 - National Average
1011 - Denton ISD
1009 - Garland ISD
1009 - Aubrey ISD
1009 - Van Alstyne ISD
1008 - Wylie ISD
1005 - Ponder ISD
1001 - Forney ISD
998 - Krum ISD
997 - Mansfield ISD
992 - Duncanville ISD
991 - Texas Average
986 - Mesquite ISD
984 - Anna ISD
984 - Sanger ISD
982 - Grand Prairie ISD
972 - Lake Dallas ISD
971 - Farmersville ISD
963 - Little Elm ISD
961 - Grand Prairie ISD
944 - Fort Worth ISD
927 - DeSoto ISD
903 - Cedar Hill ISD
855 - Dallas ISD
809 - Lancaster ISD