Long Island graduation rates
Here are the high school graduation rates for Long Island school districts for 2010, the most recent year made available by the state Department of Education, including data on those receiving Regents and Individualized Education Program (IEP) diplomas.
| District | High school grads | Number with Regents diplomas | Percent with Regents diplomas | Number with advanced Regents diplomas | Percent with advanced Regents diplomas | Number with IEP diplomas |
| Suffolk | 19,153 | 17,260 | 90% | 9355 | 49% | 265 |
| Nassau | 15,975 | 14,753 | 92% | 9655 | 60% | 205 |
| Brentwood | 1,091 | 916 | 84% | 251 | 23% | 20 |
| Sachem | 1,071 | 976 | 91% | 620 | 58% | 15 |
| Central Islip | 359 | 273 | 76% | 42 | 12% | 15 |
| Sewanhaka | 1,378 | 1,278 | 93% | 759 | 55% | 15 |
| Roosevelt | 143 | 60 | 42% | 5 | 3% | 14 |
| Half Hollow Hills | 761 | 737 | 97% | 548 | 72% | 13 |
| Copiague | 375 | 316 | 84% | 102 | 27% | 13 |
| Farmingdale | 482 | 420 | 87% | 246 | 51% | 12 |
| South Country | 302 | 248 | 82% | 90 | 30% | 12 |
| Levittown | 611 | 588 | 96% | 422 | 69% | 12 |
| Wyandanch | 109 | 75 | 69% | 7 | 6% | 12 |
| William Floyd | 692 | 554 | 80% | 204 | 29% | 11 |
| Longwood | 638 | 533 | 84% | 182 | 29% | 10 |
| Oceanside | 471 | 445 | 94% | 278 | 59% | 10 |
| Valley Stream Central | 734 | 694 | 95% | 460 | 63% | 10 |
| Patchogue-Medford | 647 | 564 | 87% | 145 | 22% | 9 |
| North Babylon | 390 | 333 | 85% | 123 | 32% | 9 |
| Bellmore-Merrick | 954 | 923 | 97% | 696 | 73% | 9 |
| Syosset | 539 | 531 | 99% | 446 | 83% | 9 |
| Massapequa | 620 | 584 | 94% | 407 | 66% | 8 |
| Commack | 603 | 596 | 99% | 486 | 81% | 8 |
| East Islip | 408 | 398 | 98% | 259 | 63% | 8 |
| Lindenhurst | 569 | 532 | 93% | 274 | 48% | 8 |
| Glen Cove | 194 | 181 | 93% | 88 | 45% | 7 |
| East Meadow | 652 | 578 | 89% | 357 | 55% | 7 |
| South Huntington | 467 | 432 | 93% | 211 | 45% | 7 |
| Lawrence | 240 | 202 | 84% | 88 | 37% | 7 |
| Westbury | 255 | 212 | 83% | 37 | 15% | 6 |
| Deer Park | 350 | 327 | 93% | 166 | 47% | 6 |
| West Hempstead | 223 | 202 | 91% | 109 | 49% | 6 |
| Baldwin | 423 | 388 | 92% | 156 | 37% | 5 |
| Uniondale | 412 | 357 | 87% | 114 | 28% | 5 |
| West Babylon | 375 | 347 | 93% | 202 | 54% | 5 |
| Amityville | 208 | 177 | 85% | 52 | 25% | 5 |
| Mineola | 180 | 172 | 96% | 117 | 65% | 5 |
| Great Neck | 623 | 599 | 96% | 487 | 78% | 5 |
| Huntington | 256 | 223 | 87% | 123 | 48% | 5 |
| Riverhead | 328 | 282 | 86% | 149 | 45% | 5 |
| Sayville | 294 | 285 | 97% | 187 | 64% | 4 |
| West Islip | 456 | 433 | 95% | 301 | 66% | 4 |
| Rocky Point | 270 | 243 | 90% | 93 | 34% | 4 |
| Connetquot | 546 | 498 | 91% | 270 | 49% | 4 |
| Comsewogue | 295 | 262 | 89% | 144 | 49% | 4 |
| Middle Country | 810 | 684 | 84% | 304 | 38% | 4 |
| Hampton Bays | 145 | 121 | 83% | 53 | 37% | 4 |
| Jericho | 348 | 344 | 99% | 313 | 90% | 4 |
| Bethpage | 269 | 265 | 99% | 195 | 72% | 4 |
| Long Beach | 319 | 282 | 88% | 163 | 51% | 4 |
| Hempstead | 246 | 156 | 63% | 18 | 7% | 4 |
| Freeport | 472 | 371 | 79% | 122 | 26% | 4 |
| Hicksville | 433 | 400 | 92% | 213 | 49% | 4 |
| Center Moriches | 111 | 98 | 88% | 33 | 30% | 3 |
| Greenport | 39 | 29 | 74% | 11 | 28% | 3 |
| Malverne | 135 | 116 | 86% | 59 | 44% | 3 |
| Island Trees | 215 | 192 | 89% | 104 | 48% | 3 |
| Northport-East Northport | 482 | 445 | 92% | 282 | 59% | 3 |
| Three Village | 630 | 599 | 95% | 451 | 72% | 3 |
| Southampton | 141 | 122 | 87% | 75 | 53% | 3 |
| Hewlett-Woodmere | 274 | 264 | 96% | 199 | 73% | 3 |
| Miller Place | 240 | 224 | 93% | 124 | 52% | 3 |
| Bay Shore | 459 | 407 | 89% | 214 | 47% | 3 |
| East Hampton | 231 | 202 | 87% | 97 | 42% | 3 |
| Port Washington | 399 | 371 | 93% | 257 | 64% | 3 |
| Bayport-Blue Point | 168 | 157 | 93% | 101 | 60% | 3 |
| Mount Sinai | 220 | 207 | 94% | 142 | 65% | 2 |
| Herricks | 342 | 329 | 96% | 240 | 70% | 2 |
| Kings Park | 296 | 276 | 93% | 181 | 61% | 2 |
| Elwood | 190 | 183 | 96% | 138 | 73% | 2 |
| Lynbrook | 237 | 230 | 97% | 162 | 68% | 2 |
| Roslyn | 308 | 298 | 97% | 248 | 81% | 2 |
| Rockville Centre | 285 | 281 | 99% | 245 | 86% | 2 |
| Plainview-Old Bethpage | 430 | 416 | 97% | 348 | 81% | 2 |
| Eastport-South Manor | 316 | 290 | 92% | 171 | 54% | 2 |
| North Shore | 223 | 214 | 96% | 149 | 67% | 2 |
| Smithtown | 760 | 732 | 96% | 484 | 64% | 1 |
| Shoreham-Wading River | 204 | 185 | 91% | 102 | 50% | 1 |
| Sag Harbor | 66 | 61 | 92% | 38 | 58% | 1 |
| Mattituck-Cutchogue | 124 | 116 | 94% | 73 | 59% | 1 |
| Seaford | 171 | 161 | 94% | 110 | 64% | 1 |
| Harborfields | 286 | 271 | 95% | 205 | 72% | 1 |
| Plainedge | 264 | 242 | 92% | 172 | 65% | 1 |
| Wantagh | 283 | 278 | 98% | 217 | 77% | 1 |
| Hauppauge | 308 | 289 | 94% | 191 | 62% | 1 |
| East Rockaway | 115 | 98 | 85% | 35 | 30% | 1 |
| East Williston | 137 | 130 | 95% | 103 | 75% | 1 |
| Westhampton Beach | 220 | 191 | 87% | 115 | 52% | - |
| Shelter Island | 24 | 21 | 88% | 11 | 46% | - |
| Southold | 97 | 90 | 93% | 55 | 57% | - |
| Carle Place | 125 | 115 | 92% | 80 | 64% | - |
| Garden City | 305 | 299 | 98% | 253 | 83% | - |
| Oyster Bay-East Norwich | 124 | 114 | 92% | 77 | 62% | - |
| Bridgehampton | 20 | 13 | 65% | 3 | 15% | - |
| Fishers Island | 2 | 2 | 100% | 2 | 100% | - |
| Manhasset | 208 | 201 | 97% | 167 | 80% | - |
| Islip | 302 | 299 | 99% | 191 | 63% | - |
| Babylon | 150 | 139 | 93% | 90 | 60% | - |
| Locust Valley | 174 | 172 | 99% | 134 | 77% | - |
| Little Flower | 2 | - | -% | - | -% | - |