This is a list of DFW area high schools ranked by the average score on the Math section of the SAT test. The max score for the Math section is 800. The Texas Education Agency breaks down the SAT scores into two groups: Math and English/Writing combined. There is a separate list for the English/Writing scores and rankings.
The English/Writing list is here:
http://dallas-area-schools.blogspot.com/2015/12/2014-2015-english-and-writing-sat.html
The full SAT list is here:
http://dallas-area-schools.blogspot.com/2015/12/2014-2015-sat-scores-for-dallas-ft.html
Private schools do not have to report SAT scores to the state, so there is no public listing of SAT scores for students attending private schools.
Math SAT Average - School (District/ISD or charter)
661 - Talented & Gifted "TAG" magnet (Dallas)
656 - Science & Engineering "SEM" magnet (Dallas)
617 - Highland Park (Highland Park)
605 - Plano Senior (Plano)
604 - Carroll (Carroll)
602 - Coppell (Coppell)
601 - Plano West (Plano)
591 - Flower Mound (Lewisville)
587 - Lovejoy (Lovejoy)
580 - Marcus (Lewisville)
578 - Plano East (Plano)
578 - North Hills (Uplift charter)
577 - Westlake (charter)
571 - JJ Pearce (Richardson)
571 - Liberty (Frisco)
568 - Centennial (Frisco)
565 - Hebron (Lewisville)
565 - Keller (Keller)
564 - Winfree Richardson (charter)
560 - Frisco (Frisco)
559 - Allen (Allen)
558 - Colleyville Heritage (Grapevine-Colleyville)
556 - Richland Collegiate (charter)
553 - Boyd (McKinney)
553 - Grapevine (Grapevine-Colleyville)
553 - Wakeland (Frisco)
550 - Pottsboro (Pottsboro)
548 - Argyle (Argyle)
547 - New Tech (Coppell)
546 - Rockwall (Rockwall)
544 - Heritage (Frisco)
543 - Berkner (Richardson)
543 - Prosper (Prosper)
541 - Martin (Arlington)
541 - Rangel girls school (Dallas)
540 - Central (Keller)
538 - McKinney (McKinney)
537 - McKinney North (McKinney)
534 - Sunnyvale (Sunnyvale)
532 - Summit International (charter)
532 - The Colony (Lewisville)
530 - Garland (Garland)
530 - Waxahachie Global (Waxahachie)
528 - Mansfield (Mansfield)
528 - Rockwall-Heath (Rockwall)
527 - Lake Highlands (Richardson)
526 - Cedar Hill Collegiate (Cedar Hill)
526 - Midlothian (Midlothian)
526 - Sherman (Sherman)
524 - Booker T. Washington Arts magnet (Dallas)
524 - LD Bell (HEB)
524 - Richardson (Richardson)
523 - Creekview (Carrollton-Farmers Branch)
522 - Lone Star (Frisco)
521 - Denison (Denison)
521 - Trinity (HEB)
520 - Newman Smith (Carrollton-Farmers Branch)
518 - Guyer (Denton)
517 - Wylie (Wylie)
516 - Law magnet (Dallas)
516 - Ranchview (Carrollton-Farmers Branch)
516 - Timberview (Keller)
515 - Granbury (Granbury)
513 - Forney (Forney)
512 - Crandall (Crandall)
512 - Sachse (Garland)
511 - Health magnet (Dallas)
511 - Melissa (Melissa)
510 - Lamar (Arlington)
510 - Mansfield Legacy (Mansfield)
509 - North Garland (Garland)
508 - Ennis (Ennis)
506 - Arlington (Arlington)
506 - Rowlett (Garland)
505 - Burleson Centennial (Burleson)
505 - Business magnet (Dallas)
505 - Decatur (Decatur)
504 - Fossil Ridge (Keller)
504 - Wylie East (Wylie)
502 - Garza Early College (Dallas)
502 - Lake Dallas (Lake Dallas)
502 - Lewisville (Lewisville)
502 - RL Turner (Carrollton-Farmers Branch)
501 - Paschal (Ft. Worth)
501 - Waxahachie (Waxahachie)
500 - FW Academy of Fine Arts (charter)
500 - Sanger (Sanger)
497 - Anna (Anna)
497 - Denton (Denton)
497 - Dubriski Career (Grand Prairie)
494 - Red Oak (Red Oak)
492 - Royse City (Royse City)
491 - Texas Average
491 - Ryan (Denton)
490 - Early College (Carrollton-Farmers Branch)
490 - Little Elm (Little Elm)
489 - Williams Prep (Uplift charter)
488 - Burleson (Burleson)
485 - Greenville (Greenville)
485 - Mansfield Summit (Mansfield)
484 - Mansfield Frontier (Mansfield)
484 - Naaman Forest (Garland)
482 - Horn (Mesquite)
481 - Mansfield Lake Ridge (Mansfield)
481 - North Forney (Forney)
480 - Bowie (Arlington)
480 - South Grand Prairie (Grand Prairie)
479 - WT White (Dallas)
478 - Mansfield Timberview (Mansfield)
478 - Quinlan Ford (Quinlan)
472 - Woodrow Wilson (Dallas)
471 - Peak Prep (Uplift charter)
471 - Poteet (Mesquite)
470 - Lakeview Centennial (Garland)
468 - Terrell (Terrell)
464 - Education magnet (Dallas)
463 - West Mesquite (Mesquite)
461 - Corsicana (Corsicana)
456 - Ferris (Ferris)
456 - North Mesquite (Mesquite)
455 - Seguin (Arlington)
454 - Mesquite (Mesquite)
453 - Gilliam Collegiate (Dallas)
453 - Life School Red Oak (charter)
449 - Arlington Heights (Ft. Worth)
449 - Hillcrest (Dallas)
448 - Faith Family Waxahachie (charter)
447 - Life School Oak Cliff (charter)
446 - Macarthur (Irving)
445 - Cedar Hill (Cedar Hill)
445 - Duncanville (Duncanville)
444 - Sam Houston (Arlington)
443 - Southwest (Ft. Worth)
441 - Singley Academy (Irving)
436 - Nimitz (Irving)
435 - Hampton Prep (Uplift charter)
435 - Trimble Tech (Ft. Worth)
433 - Pegasus (charter)
433 - Seagoville (Dallas)
431 - Desoto (Desoto)
430 - South Garland (Garland)
428 - Irving (Irving)
428 - Western Hills (Ft. Worth)
427 - Grand Prairie (Grand Prairie)
427 - Skyline (Dallas)
425 - Sunset (Dallas)
421 - Thomas Jefferson (Dallas)
417 - Bryan Adams (Dallas)
416 - Success (Ft. Worth)
413 - Adamson (Dallas)
412 - Pinkston (Dallas)
409 - Molina (Dallas)
407 - Diamond Hill-Jarvis (Ft. Worth)
406 - Spruce (Dallas)
405 - Carter-Riverside (Ft. Worth)
405 - Conrad (Dallas)
405 - Faith Family Oak Cliff (charter)
404 - North Dallas (Dallas)
404 - North Side (Ft. Worth)
404 - Wilmer Hutchins (Dallas)
402 - Lancaster (Lancaster)
402 - South Hills (Ft. Worth)
397 - Carter (Dallas)
397 - Roosevelt (Dallas)
392 - Polytechnic (Ft. Worth)
387 - Samuell (Dallas)
380 - Kimball (Dallas)
380 - Madison (Dallas)
380 - Venture Alternative (Arlington)
375 - Eastern Hills (Ft. Worth)
375 - Gateway (charter)
374 - Lincoln Humanities (Dallas)
368 - Dunbar (Ft. Worth)
365 - Cardwell Career Prep (Irving)
363 - Wyatt (Ft. Worth)
349 - South Oak Cliff (Dallas)
Source: Texas Education Agency