This is from The Dallas Business Journal.
"LD school" means it's for students with average or higher IQ's but who have ADHD, ADD, dyslexia, etc.
This list has been updated here for 2011-2012:
http://dallas-area-schools.blogspot.com/2013/01/dallas-private-schools-ranked-by.html
and here for 2012-2013:
http://dallas-area-schools.blogspot.com/2013/03/2012-2013-dallas-private-schools-ranked.html
and here for 2014-2015:
http://dallas-area-schools.blogspot.com/2015/04/2014-2015-largest-dfw-private-schools.html
Rank) Tuition - School - % of applicants admitted - average class size - enrollment
1) $25,570 - Episcopal School of Dallas - 26% - 15 - 1,073
2) $25,510 - Hockaday - 21% - 15 - 1,087 (girls)
3) $25,000 - Winston School - 60% - 12 - 198 (LD school)
4) $24,503 - St. Marks - 22% - 14 - 854 (boys)
5) $23,100 - Greenhill - 25% - 16 - 1,272
6) $21,646 - Shelton School - 59% - 8 - 830 (LD school)
7) $20,610 - Parish Episcopal - 25% - 18 - 1,100
8) $20,000 - Alexander School - 85% - 5 - 50
9) $19,600 - Levine Academy - 90% - 15 - 265
10) $18,290 - Lamplighter - 40% - 17 - 437
11) $18,250 - Key School - n/a - 10 - 90 (LD school)
12) $18,000 - Dallas International School - 80% - 18 - 570
13) $17,150 - Great Lakes - 90% - 10 - 100 (LD school)
14) $17,000 - Cistercian - 36% - 22 - 356 (boys)
15) $16,765 - Trinity Valley - n/a - n/a - 960
16) $16,664 - Prestonwood Christian - 71% - 18 - 1,312
17) $16,620 - Trinity Christian - 50% - 22 - 1,523
18) $16,238 - Lakehill Prep - n/a - 16 - 400
19) $16,000 - All Saints Episcopal - 60% - 12 - 864
20) $15,850 - Cambridge School - 60-75% - 15 - 108
21) $15,000 - Fairhill School - 45% - 10 - 235 (LD school)
22) $15,000 - Hill School (Grapevine) - n/a - 9 - 100 (LD school)
23) $14,975 - Ursuline - 65% - 18/20 - 800 (girls)
24) $14,753 - Good Shephard - 79% - 19 - 560
25) $14,500 - Hill School (Ft. Worth) - n/a - 9 - 220 (LD school)
26) $14,500 - Providence Christian - 80% - 15 - 350
27) $14,500 - Covenant School - 64% - 15 - 427
28) $14,492 - Liberty Christian - 85% - 17 - 1,235
29) $14,186 - St. John's Episcopal - 73% - 18 - 500
30) $13,415 - First Baptist Academy - 62% - 15 - 351
31) $13,200 - Jesuit - 50% - 18 - 1,050 (boys)
32) $12,450 - Dallas Christian - 80% - 17 - 560
33) $12,400 - Child Study Center - 50% - 6 - 39
34) $11,600 - Bishop Dunne - 65% - 16 - 600
35) $11,240 - Gordon Montessori - 88% - 20 - 188
36) $10,500 - Starpoint School - 10-12% - 10 - 65
37) $8,315 - Arbor Creek Montessori - 90% - 12 - 15
38) $8,000 - Harvest Christian - 85% - 12 - 280
39) $7,420 - St. John Catholic - 99% - 15 - 311
40) $7,400 - Zion Lutheran - 85% - 17 - 163
41) $7,395 - St Michael Catholic - 80% - 17 - 152
42) $7,130 - St. Paul Prep - 90% - 15 - 244
43) $7,000 - St Ignatius Prep - 25% - 5 - 32
44) $7,000 - St Elizabeth - 90% - 20 - 582
45) $7,000 - St. Pius - 99% - 20 - 309
46) $6,950 - Tyler Street - 95% - 14 - 186
47) $6,800 - Faith Lutheran - 95% - 15 - 164
48) $6,525 - Temple Christian - 90% - 22/26 - 650
49) $5,650 - St Peter Catholic - 95% - 14 - 132
50) $5,505 - DeSoto Private - 25% - 15 - 219
There are a lot of schools missing from the list including:
All Saints Catholic
Bishop Lynch High
Pope John Paul High
Lutheran High School
Our Redeemer Lutheran
St. Paul Catholic
St. Monica Catholic
Willow Bend (part-time)
St. Rita Catholic
The Westwood School
Prince of Peace Catholic
Prince of Peace Christian
Oak Hill (LD School)
Bending Oaks
White Rock School
St. Philip's School and Community Center (South Dallas)
The Highlands School (single gender classes)
Highlander
St. Thomas Aquinas Catholic
Kessler School
St. Alcuin Montessori
Coram Deo
Trinity Christian School
Southwest Academy (LD school)
Spring Creek Academy (part-time)
St. Anthony School (LD school)
Yavneh High
Vanguard Prep (LD school)
Mary Immaculate Catholic
St. Philip's Academy (Frisco)
...and others