The 2019 list has been added:
2019 List is here
This is a list of Texas schools ranked by the number of National Merit Semifinalists each school can claim for 2018. This information was released on September 13, 2017 by the National Merit Scholarship Corporation.
# Semifinalists - School (City where school sits, not necessarily the district it's in)
77 - Plano West (Plano)
62 - Westwood High (Austin)
45 - Texas Academy Math & Science (Denton)
39 - Liberal Arts and Science Academy (Austin)
39 - St. John's School (Houston)
36 - Bellaire High (Bellaire)
32 - Flower Mound High (Flower Mound)
31 - Clements High (Sugar Land)
27 - Westlake High (Austin)
26 - Homeschoolers (Statewide)
25 - Seven Lakes High (Katy)
24 - Plano East (Plano)
22 - Carroll (Southlake)
22 - Coppell High (Coppell)
22 - Plano Senior (Plano)
21 - Allen High (Allen)
21 - Memorial High (Houston)
19 - Colleyville Heritage High (Colleyville)
18 - Clear Lake High (Houston)
18 - Dawson High (Pearland)
18 - Dulles High (Sugar Land)
18 - The Woodlands College Park (The Woodlands)
17 - Carnegie Vanguard High (Houston)
17 - Liberty High (Frisco)
17 - Marcus High (Flower Mound)
17 - Vandegrift High (Austin)
16 - Cinco Ranch High (Katy)
16 - Hockaday School (Dallas)
15 - Highland Park High (Highland Park)
15 - McNeil (Austin)
13 - St. Marks School of Texas (Dallas)
13 - Taylor High (Katy)
12 - Grapevine High (Grapevine)
11 - DeBakey High (Houston)
11 - St. Agnes Academy (Houston)
10 - Hebron High (Carrollton)
10 - Ronald Reagan High (San Antonio)
9 - A&M Consolidated High (College Station)
9 - Greenhill School (Addison)
9 - JJ Pearce (Richardson)
9 - Kingwood High (Kingwood)
9 - Kinkaid School (Houston)
9 - Lubbock High (Lubbock)
9 - Tompkins High (Katy)
8 - Garland High (Garland)
8 - Klein Oak High (Spring)
8 - Paschal High (Fort Worth)
8 - Round Rock High (Round Rock)
7 - Anderson High (Austin)
7 - Clear Springs High (League City)
7 - Stephen F. Austin High (Sugar Land)
7 - Village School (Houston)
6 - Cypress Woods High (Cypress)
6 - Independence High (Frisco)
6 - Science & Engineering magnet (Dallas)
6 - Wakeland High (Frisco)
5 - Cistercian Prep (Irving)
5 - Episcopal High (Bellaire)
5 - Heritage High (Frisco)
5 - Jersey Village High (Houston)
5 - Keystone School (San Antonio)
5 - Klein High (Klein)
5 - Lovejoy High (Allen)
5 - Martin High (Arlington)
5 - McCallum High (Austin)
5 - McKinney Boyd (McKinney)
5 - St. Mary's Hall (San Antonio)
5 - St. Stephens Episcopal Academy (Austin)
5 - Talented & Gifted magnet (Dallas)
5 - The Woodlands High (The Woodlands)
4 - AWTY International School (Houston)
4 - Boerne - Sam Champion High (Boerne)
4 - Bowie High (Austin)
4 - Cedar Park High (Cedar Park)
4 - Clear Brook High (Friendswood)
4 - Clear Creek High (League City)
4 - College Station High (College Station)
4 - Elkins High (Missouri City)
4 - Fort Worth Country Day (Fort Worth)
4 - McKinney North (McKinney)
4 - Performing &Visual Arts High (Houston)
4 - Rockwall-Heath (Heath)
4 - St. Thomas High (Houston)
4 - Tomball Memorial High (Tomball)
4 - Trinity Valley School (Fort Worth)
3 - Amarillo High (Amarillo)
3 - Cambridge School (Dallas)
3 - Centennial High (Frisco)
3 - Clear Horizons Early College High (Houston)
3 - Creekview High (Carrollton)
3 - Cy-Fair High (Cypress)
3 - Cypress Ranch High (Cypress)
3 - Cypress Ridge High (Houston)
3 - Dripping Springs High (Dripping Springs)
3 - Harmony School of Advancement (Houston)
3 - Jesuit College Prep (Dallas)
3 - Keller High (Keller)
3 - Lake Travis High (Austin)
3 - Langham Creek High (Houston)
3 - McKinney High (McKinney)
3 - Pope John Paul II (Plano)
3 - Prosper High (Prosper)
3 - Reedy High (Frisco)
3 - Regents School (Austin)
3 - Roosevelt High (San Antonio)
3 - Stony Point High (Round Rock)
3 - Strake Jesuit (Houston)
3 - Stratford High (Houston)
3 - Timber Creek (Keller)
3 - Vista Ridge (Cedar Park)
2 - Alamo Heights High (San Antonio)
2 - All Saints Episcopal (Lubbock)
2 - All Saints Episcopal (Tyler)
2 - Argyle High (Argyle)
2 - Byron Nelson High (Trophy Club)
2 - Cedar Ridge (Round Rock)
2 - Central High (Keller)
2 - Clear Falls High (League City)
2 - Clemens High (Schertz)
2 - Cypress Creek High (Houston)
2 - Decatur High (Decatur)
2 - Episcopal School (Dallas)
2 - Frisco High (Frisco)
2 - Harmony School of Innovation (Fort Worth)
2 - Harmony School of Innovation (Katy)
2 - Hightower High (Missouri City)
2 - Houston Christian (Houston)
2 - Klein Collins High (Spring)
2 - Lady Bird Johnson High (San Antonio)
2 - Lake Highlands (Dallas)
2 - Lamar High (Arlington)
2 - Lamar High (Houston)
2 - Lone Star (Frisco)
2 - Magnolia High (Magnolia)
2 - Magnolia West High (Magnolia)
2 - Mansfield High (Mansfield)
2 - Mansfield Legacy (Mansfield)
2 - Midlothian High (Midlothian)
2 - Midway High (Waco)
2 - Newman Smith (Carrollton)
2 - North Hills Prep (Irving)
2 - North Mesquite High (Mesquite)
2 - Northside Health Careers (San Antonio)
2 - Oakridge School (Arlington)
2 - Pearland High (Pearland)
2 - Richland High (North Richland Hills)
2 - Rockwall High (Rockwall)
2 - Science Academy of South Texas (Mercedes)
2 - Smithson Valley High (Spring Branch)
2 - St. John Prep (Katy)
2 - St. Joseph High (Victoria)
2 - Trinity Christian Academy (Willow Park)
2 - Trinity High (Euless)
2 - Trinity School (Midland)
2 - Ursuline Academy (Dallas)
2 - Westside High (Houston)
2 - Wylie High (Wylie)
One each from the following schools:
Abilene High (Abilene)
Aledo High (Aledo)
Ann Richards School for Young Women (Austin)
Arlington High (Arlington)
Akins High (Austin)
Atascocita High (Humble)
Ball High (Galveston)
Barbers Hill High (Baytown)
Barefoot Sanders Law magnet (Dallas)
Basis San Antonio Medical Center (San Antonio)
Belton High (Belton)
Berkner (Richardson)
Bethesda Christian School (Fort Worth)
Bishop Lynch Catholic (Dallas)
Bishop Thomas Gorman Catholic (Tyler)
Boerne High (Boerne)
Boswell (Fort Worth)
Brandeis High (San Antonio)
Brazoswood (Clute)
Brentwood Christian School (Austin)
Bryan High (Bryan)
Carthage High (Carthage)
Cedar Creek High (Cedar Creek)
Central Catholic (San Antonio)
Chapin High (El Paso)
Clark High (San Antonio)
Communication Arts (San Antonio)
Concordia Lutheran (Tomball)
Coronado High (El Paso)
Corsicana High (Corsicana)
Covenant Christian Academy (Colleyville)
Covenant Classical School (Fort Worth)
Cypress Falls High (Houston)
Cypress Lakes High (Katy)
Darul Arqam North Zone School (Houston)
Deer Park High (Deer Park)
Dubiski Career High (Grand Prairie)
Duchesne Academy (Houston)
East View High (Georgetown)
Eastwood High (El Paso)
Eaton High (Haslet)
Farmersville (Farmersville)
Flour Bluff High (Corpus Christi)
Fort Bend Christian Academy (Sugar Land)
Foster High (Richmond)
Franklin High (El Paso)
Friendswood High (Friendswood)
Granbury High (Granbury)
Grand Prairie Fine Arts Academy (Grand Prairie)
Gregory - Portland High (Portland)
Guyer High (Denton)
Hallsville High (Hallsville)
Harmony Science Academy (Beaumont)
Harmony Science Academy (El Paso)
Harmony Science Academy (Pflugerville)
Hays High (Buda)
Highlands School (Irving)
Hudson (Lufkin)
Hutto High (Hutto)
Incarnate Word Academy (Houston)
John Cooper School (The Woodlands)
Judson Early College Academy (Live Oak)
Kilgore High (Kilgore)
King High (Corpus Christi)
Lakeview Centennial (Garland)
LD Bell (Hurst)
Leander High (Leander)
Lee High (Midland)
Lee High (Tyler)
Lewis Career and Technical High (Houston)
Lewisville High (Lewisville)
Liberty Christian School (Argyle)
Little Cypress - Mauriceville High (Orange)
Lindsay High (Lindsay)
Live Oak Classical School (Waco)
Logos Prep Academy (Sugar Land)
Lubbock Christian Schools (Lubbock)
Lufkin High (Lufkin)
Lutheran South Academy (Houston)
Mansfield Lake Ridge (Mansfield)
Mansfield Summit High (Arlington)
McAllen High (McAllen)
Mesquite High (Mesquite)
Midlothian Heritage (Midlothian)
Monsignor Kelly Catholic (Beaumont)
Montgomery High (Montgomery)
Moody Science-Health (Corpus Christi)
New Braunfels High (New Braunfels)
NYOS Charter (Austin)
Oak Ridge High (Conroe)
Pasadena Memorial High (Pasadena)
Pflugerville High (Pflugerville)
Plano ISD Academy High (Plano)
Pleasanton High (Pleasanton)
Port Aransas High (Port Aransas)
Poteet High (Mesquite)
Premier High (Granbury)
Premier High of North Austin (Austin)
Prestonwood Christian Academy (Plano)
Providence Classical School (Spring)
Quest Early College (Humble)
Ranch High (Richmond)
Randolph High (Universal City)
Rapoport Academy Meyer High (Waco)
Ray High (Corpus Christi)
Red Oak (Red Oak)
Reicher Catholic (Waco)
Richardson High (Richardson)
Richland Collegiate (Dallas)
Rider High (Wichita Falls)
RL Turner High (Carrollton)
Rockport - Fulton High (Rockport)
Rouse High (Leander)
Rowlett High (Rowlett)
Rudder High (Bryan)
Salado High (Salado)
Seminole High (Seminole)
Shadow Creek High (Pearland)
Sharyland Pioneer (Mission)
South Garland High (Garland)
South Grand Prairie High (Grand Prairie)
South Texas High School Health Professions (Mercedes)
St. Andrews Episcopal (Austin)
St. Michaels Catholic Academy (Austin)
St. Stephens Episcopal (Houston)
St. Thomas Episcopal (Houston)
Steele High (Cibolo)
Taylor High (Taylor)
The Colony High (The Colony)
TMI - The Episcopal School of Texas (San Antonio)
Travis (Richmond)
Trinity Christian Academy (Addison)
Van Alstyne High (Van Alstyne)
Vanguard Prep (Dallas)
Veritas Academy (Austin)
Victoria East (Victoria)
Victoria West (Victoria)
Waxahachie Global High (Waxahachie)
West Brook High (Beaumont)
Westchester Academy of International Studies (Houston)
Yavneh Academy (Dallas)
Young Academy (North Richland Hills)