| Rank | Less than a High School Education Percentage ▼ | School District / Population |
| 1. | 39.1% | Adams County School District 14 / 37,442 |
| 2. | 38.5% | Center School District 26-JT / 3,455 |
| 3. | 35.6% | Granada School District RE-1 / 1,073 |
| 4. | 31.0% | Crowley County School District RE-1-J / 5,306 |
| 5. | 28.9% | Manzanola School District 3J / 1,093 |
| 6. | 28.1% | Campo School District RE-6 / 242 |
| 7. | 26.7% | Centennial School District R-1 / 1,717 |
| 8. | 26.3% | Westminster School District 50 / 71,524 |
| 9. | 24.1% | Fort Morgan School District RE-3 / 17,004 |
| 10. | 24.1% | Sheridan School District 2 / 8,517 |
| 11. | 24.0% | Weld County School District RE-8 / 12,393 |
| 12. | 23.7% | Limon School District RE-4J / 3,644 |
| 13. | 23.7% | Rocky Ford School District R-2 / 5,686 |
| 14. | 23.3% | Las Animas School District RE-1 / 5,268 |
| 15. | 22.7% | Wiggins School District RE-50J / 2,477 |
| 16. | 21.6% | Sierra Grande School District R-30 / 1,839 |
| 17. | 21.5% | Holly School District RE-3 / 1,204 |
| 18. | 20.6% | Mapleton School District 1 / 29,604 |
| 19. | 20.2% | Weld County School District RE-1 / 9,639 |
| 20. | 20.1% | Huerfano School District RE-1 / 5,274 |
| 21. | 19.9% | Burlington School District RE-6J / 5,251 |
| 22. | 19.7% | Greeley School District 6 / 115,684 |
| 23. | 19.6% | Adams-Arapahoe School District 28J / 209,766 |
| 24. | 18.7% | South Conejos School District RE-10 / 2,167 |
| 25. | 18.7% | Monte Vista School District C-8 / 6,521 |
| 26. | 18.7% | North Conejos School District RE-1J / 4,725 |
| 27. | 18.6% | Florence School District RE-2 / 16,521 |
| 28. | 18.5% | Trinidad School District 1 / 10,136 |
| 29. | 17.9% | Vilas School District RE-5 / 258 |
| 30. | 17.7% | Holyoke School District RE-1J / 2,986 |
| 31. | 17.6% | Lamar School District RE-2 / 9,554 |
| 32. | 17.6% | Yuma School District 1 / 4,982 |
| 33. | 17.2% | Keenesburg School District RE-3J / 12,217 |
| 34. | 17.2% | Weldon Valley School District RE-20J / 810 |
| 35. | 16.8% | De Beque School District 49-JT / 734 |
| 36. | 16.7% | Garfield School District RE-2 / 23,824 |
| 37. | 16.6% | Stratton School District R-4 / 1,055 |
| 38. | 16.5% | Primero Reorganized School District 2 / 1,320 |
| 39. | 16.2% | Canon City School District RE-1 / 28,097 |
| 40. | 16.2% | Pueblo City School District 60 / 109,446 |
| 41. | 16.1% | Brush School District RE-2J / 8,117 |
| 42. | 16.1% | Platte Valley School District RE-7 / 4,734 |
| 43. | 15.7% | East Otero School District R-1 / 8,558 |
| 44. | 15.6% | Aguilar Reorganized School District 6 / 1,155 |
| 45. | 15.5% | Lake County School District R-1 / 7,372 |
| 46. | 15.3% | Platte Valley School District RE-3 / 866 |
| 47. | 15.3% | Montrose County School District RE-1J / 38,641 |
| 48. | 15.2% | Julesburg School District RE-1 / 1,512 |
| 49. | 15.2% | Bethune School District R-5 / 592 |
| 50. | 15.0% | McClave School District RE-2 / 784 |
| 51. | 14.9% | Denver County School District 1 / 604,356 |
| 52. | 14.8% | Mountain Valley School District RE-1 / 1,413 |
| 53. | 14.7% | Cheyenne County School District RE-5 / 1,459 |
| 54. | 14.4% | Alamosa School District RE-11J / 14,499 |
| 55. | 14.3% | Hanover School District 28 / 2,077 |
| 56. | 14.1% | Harrison School District 2 / 71,425 |
| 57. | 14.0% | Walsh School District RE-1 / 1,167 |
| 57. | 14.0% | Sargent School District RE-33J / 1,056 |
| 59. | 13.7% | Roaring Fork School District RE-1 / 39,102 |
| 60. | 13.4% | Hoehne Reorganized School District 3 / 2,206 |
| 61. | 13.4% | Miami-Yoder School District 60-JT / 1,932 |
| 62. | 13.2% | Ellicott School District 22 / 4,033 |
| 63. | 13.1% | Prairie School District RE-11 / 540 |
| 64. | 13.0% | Plainview School District RE-2 / 314 |
| 65. | 12.9% | Arickaree School District R-2 / 606 |
| 66. | 12.8% | Garfield County School District 16 / 6,527 |
| 67. | 12.7% | Delta County School District 50J / 31,449 |
| 68. | 12.7% | Cheraw School District 31 / 636 |
| 69. | 12.6% | Kit Carson School District R-1 / 636 |
| 70. | 12.5% | Valley School District RE-1 / 19,956 |
| 71. | 12.4% | West End School District RE-2 / 1,655 |
| 72. | 12.4% | Wiley School District RE-13-JT / 848 |
| 73. | 12.1% | Fowler School District R-4J / 1,892 |
| 74. | 12.1% | Deer Trail School District 26J / 632 |
| 75. | 12.1% | Dolores School District RE-4A / 3,759 |
| 76. | 12.0% | Northglenn-Thornton School District 12 / 210,396 |
| 77. | 12.0% | Moffat County School District RE-1 / 13,547 |
| 78. | 11.9% | Sanford School District 6J / 1,434 |
| 79. | 11.9% | Dolores County School District RE-2 / 1,947 |
| 80. | 11.8% | Byers School District 32J / 2,375 |
| 81. | 11.7% | Eagle County School District RE 50 / 42,995 |
| 82. | 11.7% | Springfield School District RE-4 / 1,808 |
| 82. | 11.7% | Arriba-Flagler School District C-20 / 1,031 |
| 84. | 11.7% | Akron School District R-1 / 2,570 |
| 85. | 11.6% | Otis School District R-3 / 955 |
| 86. | 11.6% | Del Norte School District C-7 / 4,056 |
| 87. | 11.5% | Englewood School District 1 / 25,174 |
| 88. | 11.4% | Kim Reorganized School District 88 / 383 |
| 89. | 11.3% | Ault-Highland School District RE-9 / 5,659 |
| 90. | 11.0% | Brighton School District 27J / 76,145 |
| 90. | 11.0% | Johnstown-Milliken School District RE-5J / 16,419 |
| 92. | 10.7% | Pawnee School District RE-12 / 539 |
| 93. | 10.7% | Montezuma-Cortez School District RE-1 / 18,417 |
| 94. | 10.5% | West Grand School District 1-JT / 3,568 |
| 95. | 10.4% | Genoa-Hugo School District C-113 / 1,194 |
| 96. | 10.3% | Hi-Plains School District R-23 / 513 |
| 97. | 10.2% | Wray School District RD-2 / 3,826 |
| 98. | 10.2% | Cripple Creek-Victor School District RE-1 / 5,090 |
| 99. | 10.2% | Mesa County Valley School District 51 / 143,522 |
| 100. | 9.9% | Ignacio School District 11-JT / 5,917 |
| 101. | 9.7% | North Park School District R-1 / 1,397 |
| 102. | 9.7% | Plateau Valley School District 50 / 2,371 |
| 103. | 9.5% | Briggsdale School District RE-10 / 714 |
| 103. | 9.5% | St. Vrain Valley School District RE 1J / 152,230 |
| 105. | 9.4% | Buena Vista School District R-31 / 8,082 |
| 106. | 9.0% | Sangre de Cristo School District RE-22J / 1,245 |
| 107. | 8.9% | Pritchett School District RE-3 / 308 |
| 108. | 8.6% | Silverton School District 1 / 747 |
| 109. | 8.4% | Big Sandy School District 100J / 1,548 |
| 110. | 8.4% | Meeker School District RE1 / 3,489 |
| 111. | 8.4% | Colorado Springs School District 11 / 226,571 |
| 112. | 8.2% | Eads School District RE-1 / 1,079 |
| 112. | 8.2% | Pueblo County School District 70 / 49,398 |
| 114. | 8.2% | Haxtun School District RE-2J / 1,464 |
| 115. | 8.0% | Salida School District R-32 / 9,836 |
| 116. | 7.3% | Archuleta County School District 50-JT / 11,558 |
| 117. | 7.3% | Idalia School District RJ-3 / 666 |
| 118. | 7.1% | Swink School District 33 / 1,582 |
| 119. | 6.7% | Widefield School District 3 / 45,898 |
| 119. | 6.7% | Cotopaxi School District RE-3 / 2,967 |
| 121. | 6.5% | Bennett School District 29-J / 5,684 |
| 122. | 6.5% | Jefferson County School District R-1 / 538,708 |
| 123. | 6.4% | Thompson School District R-2J / 104,727 |
| 124. | 6.3% | Norwood School District R-2J / 2,070 |
| 125. | 6.3% | Strasburg School District 31J / 5,163 |
| 126. | 6.2% | Mancos School District RE-6 / 3,248 |
| 127. | 6.2% | Woodlin School District R-104 / 362 |
| 128. | 6.2% | Gilpin County School District RE-1 / 2,833 |
| 129. | 6.2% | Custer County School District C-1 / 3,848 |
| 130. | 6.2% | Plateau School District RE-5 / 633 |
| 131. | 6.1% | Fountain School District 8 / 31,924 |
| 132. | 6.1% | Eaton School District RE-2 / 9,077 |
| 133. | 5.9% | Durango School District 9-R / 38,689 |
| 133. | 5.9% | Rangely School District RE-4 / 3,239 |
| 135. | 5.8% | Poudre School District R-1 / 185,494 |
| 136. | 5.8% | Windsor School District RE-4 / 21,180 |
| 137. | 5.7% | Liberty School District J-4 / 602 |
| 138. | 5.6% | Gunnison Watershed School District RE-1J / 15,226 |
| 139. | 5.5% | Kiowa School District C-2 / 2,644 |
| 140. | 5.3% | Hinsdale County School District RE-1 / 741 |
| 141. | 5.3% | Hayden School District RE-1 / 3,010 |
| 142. | 5.0% | Karval School District RE-23 / 331 |
| 143. | 4.9% | Cherry Creek School District 5 / 271,809 |
| 144. | 4.9% | Lone Star School District 101 / 206 |
| 145. | 4.9% | East Grand School District 2 / 11,196 |
| 146. | 4.8% | Park County School District RE-2 / 5,867 |
| 147. | 4.7% | Littleton School District 6 / 92,823 |
| 148. | 4.7% | Woodland Park School District RE-2 / 18,073 |
| 149. | 4.6% | Clear Creek School District RE-1 / 9,059 |
| 150. | 4.6% | Platte Canyon School District 1 / 10,301 |
| 151. | 4.6% | South Routt School District RE-3 / 3,238 |
| 151. | 4.6% | Buffalo School District RE-4 / 915 |
| 153. | 4.5% | Summit School District RE-1 / 27,651 |
| 154. | 4.5% | Edison School District 54-JT / 285 |
| 155. | 4.1% | La Veta School District RE-2 / 1,456 |
| 156. | 4.0% | Park School District R-3 / 11,450 |
| 157. | 3.9% | Creede Consolidated School District 1 / 702 |
| 158. | 3.8% | Agate School District 300 / 673 |
| 159. | 3.8% | Boulder Valley School District RE-2 / 214,867 |
| 160. | 3.7% | Bayfield School District R-10-JT / 7,437 |
| 161. | 3.5% | Manitou Springs School District 14 / 8,122 |
| 162. | 3.5% | Falcon School District 49 / 74,250 |
| 163. | 3.4% | Peyton School District 23-JT / 3,727 |
| 164. | 3.3% | Cheyenne Mountain School District 12 / 22,068 |
| 165. | 3.0% | Elbert School District 200 / 1,674 |
| 166. | 2.9% | Calhan School District RJ-1 / 3,087 |
| 167. | 2.9% | Frenchman School District RE-3 / 1,083 |
| 168. | 2.7% | Ridgway School District R-2 / 2,352 |
| 169. | 2.6% | Telluride School District R-1 / 5,842 |
| 170. | 2.6% | Steamboat Springs School District RE-2 / 17,018 |
| 171. | 2.5% | Douglas County School District RE-1 / 289,396 |
| 172. | 2.4% | Moffat Consolidated School District 2 / 1,413 |
| 173. | 2.1% | Ouray School District R-1 / 1,711 |
| 174. | 2.0% | Elizabeth School District C-1 / 14,036 |
| 175. | 1.9% | Aspen School District 1 / 12,732 |
| 176. | 1.9% | Lewis-Palmer School District 38 / 28,913 |
| 177. | 1.7% | Academy School District 20 / 98,212 |
| 178. | 0.8% | Branson Reorganized School District 82 / 185 |
Please note that we only rank locations with 'Less than a High School Education Percentage' data. The rank above might not be a complete list. Locations without 'Less than a High School Education Percentage' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
