| Rank | Less than a High School Education Percentage ▼ | School District / Population |
| 1. | 42.2% | Macwahoc Plantation / 63 |
| 2. | 38.2% | Deblois / 44 |
| 3. | 26.4% | Willimantic / 105 |
| 4. | 25.0% | Name N/A / 60 |
| 4. | 25.0% | Dennistown Plantation / 20 |
| 6. | 24.9% | School Administration District 10 / 215 |
| 7. | 24.2% | Kennebec Unorganized Territory / 41 |
| 8. | 24.0% | Caswell / 246 |
| 9. | 23.2% | Indian Township / 769 |
| 10. | 22.3% | Grand Isle / 488 |
| 11. | 21.9% | Talmadge / 83 |
| 12. | 21.6% | School Administrative District 14 / 737 |
| 13. | 21.1% | Beddington / 40 |
| 14. | 20.6% | Pleasant Ridge Plantation / 88 |
| 15. | 20.4% | Name N/A / 527 |
| 16. | 19.9% | Medford / 204 |
| 17. | 19.7% | Harmony / 816 |
| 18. | 19.5% | Vanceboro / 111 |
| 19. | 19.1% | School Administrative District 32 / 2,185 |
| 19. | 19.1% | Beals / 485 |
| 21. | 18.9% | Pleasant Point / 787 |
| 22. | 18.4% | School Administrative District 24 / 2,775 |
| 23. | 18.3% | Carroll Plantation / 115 |
| 24. | 18.2% | Highland Plantation / 45 |
| 25. | 18.1% | School Administrative District 13 / 1,570 |
| 26. | 17.9% | Name N/A / 1,271 |
| 27. | 17.4% | Name N/A / 4,615 |
| 28. | 16.9% | Wesley / 77 |
| 29. | 16.7% | Isle au Haut / 61 |
| 30. | 16.4% | Regional School Unit 39 / 10,339 |
| 31. | 16.3% | Calais / 3,063 |
| 32. | 16.3% | School Administrative District 67 / 6,389 |
| 33. | 15.7% | School Administrative District 27 / 6,478 |
| 34. | 15.6% | School Administrative District 20 / 3,447 |
| 35. | 15.6% | School Administrative District 30 / 2,269 |
| 36. | 14.9% | Waite / 91 |
| 37. | 14.6% | Lowell / 329 |
| 37. | 14.6% | School Administrative District 33 / 1,608 |
| 39. | 14.5% | Coplin Plantation / 102 |
| 40. | 14.4% | Pembroke / 881 |
| 41. | 14.2% | Name N/A / 1,724 |
| 42. | 14.1% | Lewiston / 36,410 |
| 43. | 14.0% | East Range Community School District / 229 |
| 44. | 14.0% | Aroostook Unorganized Territory / 1,572 |
| 45. | 13.8% | School Administrative District 54 / 17,008 |
| 46. | 13.8% | Sanford / 20,853 |
| 47. | 13.7% | Woodland / 1,193 |
| 48. | 13.7% | Madawaska / 3,965 |
| 49. | 13.6% | School Administrative District 59 / 5,326 |
| 50. | 13.5% | Washington Unorganized Territory / 1,495 |
| 51. | 13.3% | Seboeis Plantation / 51 |
| 52. | 13.3% | Regional School Unit 04 / 10,540 |
| 53. | 13.3% | School Administrative District 31 / 4,042 |
| 54. | 13.1% | Deer Isle-Stonington Community School District / 3,165 |
| 55. | 12.9% | New Sweden / 611 |
| 56. | 12.8% | Augusta / 18,898 |
| 57. | 12.8% | Orient / 171 |
| 58. | 12.8% | Reed Plantation / 179 |
| 59. | 12.7% | Greenbush / 1,441 |
| 60. | 12.7% | Bridgewater / 618 |
| 61. | 12.7% | Machiasport / 1,185 |
| 62. | 12.5% | The Forks Plantation / 24 |
| 62. | 12.5% | School Administrative District 65 / 58 |
| 62. | 12.5% | Alexander / 437 |
| 65. | 12.4% | Regional School Unit 19 / 14,878 |
| 66. | 12.3% | Jonesport / 1,239 |
| 67. | 12.2% | Easton / 1,198 |
| 68. | 12.2% | School Administrative District 04 / 5,106 |
| 69. | 12.2% | Millinocket / 4,451 |
| 70. | 12.2% | School Administrative District 46 / 6,518 |
| 71. | 12.1% | Name N/A / 5,321 |
| 72. | 12.1% | School Administrative District 29 / 7,911 |
| 73. | 12.1% | Bancroft / 70 |
| 74. | 12.0% | School Administrative District 12 / 986 |
| 75. | 11.9% | School Administrative District 70 / 3,752 |
| 76. | 11.9% | Name N/A / 1,072 |
| 77. | 11.9% | Charlotte / 279 |
| 78. | 11.8% | School Administrative District 41 / 4,323 |
| 79. | 11.8% | School Administrative District 08 / 1,327 |
| 80. | 11.7% | Cutler / 468 |
| 81. | 11.6% | Name N/A / 10,044 |
| 81. | 11.6% | School Administrative District 19 / 1,485 |
| 83. | 11.5% | School Administrative District 74 / 5,395 |
| 84. | 11.5% | Somerset Unorganized Territory / 647 |
| 85. | 11.4% | Waterville / 15,886 |
| 85. | 11.4% | Fayette / 1,143 |
| 87. | 11.4% | School Administrative District 37 / 4,633 |
| 88. | 11.3% | School Administrative District 45 / 2,323 |
| 89. | 11.3% | School Administrative District 53 / 6,297 |
| 90. | 11.1% | Medway / 1,157 |
| 91. | 11.0% | Machias / 2,209 |
| 92. | 10.9% | Penobscot Unorganized Territory / 1,165 |
| 93. | 10.8% | School Administrative District 64 / 7,974 |
| 94. | 10.8% | Airline Community School District / 464 |
| 95. | 10.8% | School Administrative District 17 / 24,133 |
| 96. | 10.7% | Oxford Unorganized Territory / 544 |
| 97. | 10.7% | Biddeford / 21,303 |
| 98. | 10.6% | School Administrative District 01 / 12,992 |
| 99. | 10.6% | East Millinocket / 1,812 |
| 100. | 10.6% | Damariscotta / 2,001 |
| 101. | 10.5% | Regional School Unit 10 / 18,853 |
| 102. | 10.5% | School Administrative District 76 / 302 |
| 102. | 10.5% | School Administrative District 68 / 6,681 |
| 104. | 10.5% | Beaver Cove / 169 |
| 105. | 10.2% | School Administrative District 42 / 2,252 |
| 106. | 10.1% | Princeton / 803 |
| 107. | 10.1% | Auburn / 22,960 |
| 108. | 10.1% | Westbrook / 17,662 |
| 108. | 10.1% | Piscataquis Unorganized Territory / 722 |
| 110. | 10.0% | Gilead / 89 |
| 111. | 10.0% | School Administrative District 55 / 8,125 |
| 112. | 9.9% | East Machias / 1,381 |
| 113. | 9.9% | School Administrative District 60 / 18,087 |
| 114. | 9.9% | School Administrative District 49 / 14,602 |
| 115. | 9.8% | Regional School Unit 34 / 10,069 |
| 116. | 9.7% | Penobscot / 1,153 |
| 117. | 9.5% | Crawford / 94 |
| 118. | 9.4% | Drew Plantation / 46 |
| 119. | 9.3% | Cranberry Isles / 123 |
| 120. | 9.2% | Roque Bluffs / 262 |
| 120. | 9.2% | School Administrative District 03 / 10,597 |
| 122. | 9.1% | School Administrative District 52 / 12,096 |
| 123. | 9.1% | Bangor / 32,800 |
| 123. | 9.1% | Nashville Plantation / 64 |
| 125. | 9.1% | School Administrative District 40 / 14,356 |
| 126. | 9.0% | Regional School Unit 20 / 17,022 |
| 127. | 9.0% | Regional School Unit 02 / 14,616 |
| 127. | 9.0% | Regional School Unit 12 / 14,756 |
| 129. | 8.9% | School Administrative District 58 / 3,974 |
| 130. | 8.9% | Regional School Unit 16 / 11,045 |
| 131. | 8.9% | School Administrative District 61 / 14,598 |
| 132. | 8.8% | Baileyville / 1,409 |
| 133. | 8.8% | Jefferson / 2,535 |
| 134. | 8.6% | School Administrative District 72 / 8,110 |
| 135. | 8.6% | Perry / 825 |
| 136. | 8.4% | Portland / 66,317 |
| 137. | 8.3% | Regional School Unit 23 / 29,425 |
| 138. | 8.3% | School Administrative District 23 / 5,696 |
| 139. | 8.2% | Greenville / 1,841 |
| 139. | 8.2% | Shirley / 291 |
| 141. | 8.2% | Sedgwick / 1,137 |
| 141. | 8.2% | Regional School Unit 24 / 18,942 |
| 143. | 8.1% | School Administrative District 09 / 17,770 |
| 144. | 8.1% | Winslow / 7,709 |
| 145. | 8.0% | School Administrative District 06 / 26,158 |
| 146. | 7.9% | School Administrative District 57 / 22,234 |
| 147. | 7.8% | Woodville / 212 |
| 148. | 7.7% | Eastport / 1,414 |
| 149. | 7.7% | Southwest Harbor / 1,976 |
| 150. | 7.7% | Great Salt Bay Community School District / 4,670 |
| 150. | 7.7% | Jonesboro / 495 |
| 152. | 7.7% | Bremen / 894 |
| 153. | 7.6% | School Administrative District 11 / 13,654 |
| 153. | 7.6% | Indian Island / 827 |
| 155. | 7.6% | Tremont / 1,764 |
| 156. | 7.5% | Lakeville / 113 |
| 157. | 7.5% | Vassalboro / 4,337 |
| 158. | 7.4% | Brooklin / 858 |
| 158. | 7.4% | Milford / 3,054 |
| 160. | 7.4% | Regional School Unit 18 / 19,051 |
| 161. | 7.4% | Lisbon / 8,936 |
| 162. | 7.3% | School Administrative District 44 / 5,676 |
| 162. | 7.3% | Brewer / 9,391 |
| 164. | 7.3% | Brunswick / 20,329 |
| 165. | 7.1% | Regional School Unit 13 / 17,174 |
| 166. | 7.1% | Hancock Unorganized Territory / 177 |
| 167. | 7.0% | Georgetown / 1,050 |
| 168. | 6.7% | Regional School Unit 01 / 15,974 |
| 169. | 6.6% | Surry / 1,666 |
| 170. | 6.6% | Appleton / 1,474 |
| 171. | 6.6% | Regional School Unit 14 / 21,760 |
| 172. | 6.5% | Dennysville / 324 |
| 173. | 6.5% | Lincoln Plantation / 31 |
| 174. | 6.4% | Kittery / 9,573 |
| 175. | 6.3% | Wells-Ogunquit Community School District / 10,924 |
| 176. | 6.2% | Regional School Unit 05 / 13,441 |
| 177. | 6.1% | Otis / 587 |
| 178. | 6.0% | Dedham / 1,584 |
| 179. | 5.9% | Great Lake Stream Plantation / 118 |
| 180. | 5.9% | Hermon / 5,598 |
| 180. | 5.9% | Whitneyville / 173 |
| 182. | 5.9% | Regional School Unit 26 / 10,515 |
| 183. | 5.9% | Edgecomb / 1,154 |
| 184. | 5.8% | School Administrative District 15 / 13,450 |
| 185. | 5.6% | Baring Plantation / 265 |
| 186. | 5.6% | Name N/A / 31,148 |
| 187. | 5.6% | Regional School Unit 25 / 8,333 |
| 188. | 5.5% | Nobleboro / 1,702 |
| 189. | 5.4% | Southport / 622 |
| 190. | 5.4% | Brooksville / 885 |
| 191. | 5.4% | Upton / 61 |
| 192. | 5.3% | Name N/A / 1,843 |
| 193. | 5.2% | Regional School Unit 38 / 7,860 |
| 194. | 5.1% | Meddybemps / 121 |
| 195. | 5.1% | School Administrative District 35 / 13,510 |
| 196. | 5.0% | Mount Desert Community School District / 11,183 |
| 196. | 5.0% | Franklin Unorganized Territory / 809 |
| 198. | 4.9% | Bar Harbor / 5,269 |
| 199. | 4.8% | Scarborough / 19,209 |
| 200. | 4.8% | Robbinston / 533 |
| 201. | 4.7% | Whiting / 467 |
| 202. | 4.7% | South Portland / 25,154 |
| 203. | 4.6% | Lincolnville / 2,269 |
| 204. | 4.5% | School Administrative District 63 / 6,385 |
| 205. | 4.4% | Newcastle / 1,775 |
| 206. | 4.4% | Regional School Unit 21 / 18,582 |
| 207. | 4.4% | Boothbay-Boothbay Harbor Community School District / 5,113 |
| 208. | 4.3% | Islesboro / 643 |
| 209. | 4.3% | Trenton / 1,555 |
| 210. | 4.2% | Name N/A / 13,571 |
| 211. | 4.0% | Acton / 2,497 |
| 212. | 4.0% | School Administrative District 28 / 8,177 |
| 213. | 3.9% | School Administrative District 75 / 19,467 |
| 214. | 3.9% | Winthrop / 6,046 |
| 215. | 3.9% | Name N/A / 1,959 |
| 216. | 3.9% | Gorham / 16,677 |
| 217. | 3.6% | Bristol / 2,738 |
| 218. | 3.4% | School Administrative District 22 / 13,773 |
| 219. | 3.3% | Marshfield / 462 |
| 220. | 3.2% | South Bristol / 952 |
| 221. | 3.2% | Orrington / 3,721 |
| 222. | 3.0% | Yarmouth / 8,433 |
| 223. | 2.9% | Hope / 1,651 |
| 224. | 2.9% | Blue Hill / 2,680 |
| 225. | 2.7% | Cooper / 133 |
| 225. | 2.7% | Bowerbank / 122 |
| 227. | 2.7% | Castine / 1,425 |
| 228. | 2.4% | York / 12,661 |
| 229. | 2.2% | Northfield / 174 |
| 230. | 2.2% | Chebeague Island / 431 |
| 231. | 2.2% | School Administrative District 07 / 410 |
| 232. | 2.2% | Caratunk / 107 |
| 233. | 2.1% | School Administrative District 51 / 10,963 |
| 234. | 1.5% | Carrabassett Valley / 561 |
| 235. | 1.3% | Cape Elizabeth / 9,093 |
| 236. | 1.2% | Mount Desert / 2,174 |
| 237. | 1.0% | Falmouth / 11,424 |
| 238. | 1.0% | Long Island / 239 |
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.
