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 |
| Fishers Island | 2 | 2 | 100% | 2 | 100% | - |
| Little Flower | 2 | - | -% | - | -% | - |
| Bridgehampton | 20 | 13 | 65% | 3 | 15% | - |
| Shelter Island | 24 | 21 | 88% | 11 | 46% | - |
| Greenport | 39 | 29 | 74% | 11 | 28% | 3 |
| Sag Harbor | 66 | 61 | 92% | 38 | 58% | 1 |
| Port Jefferson | 86 | 84 | 98% | 60 | 70% | - |
| Southold | 97 | 90 | 93% | 55 | 57% | - |
| Wyandanch | 109 | 75 | 69% | 7 | 6% | 12 |
| Center Moriches | 111 | 98 | 88% | 33 | 30% | 3 |
| East Rockaway | 115 | 98 | 85% | 35 | 30% | 1 |
| Oyster Bay-East Norwich | 124 | 114 | 92% | 77 | 62% | - |
| Mattituck-Cutchogue | 124 | 116 | 94% | 73 | 59% | 1 |
| Carle Place | 125 | 115 | 92% | 80 | 64% | - |
| Malverne | 135 | 116 | 86% | 59 | 44% | 3 |
| East Williston | 137 | 130 | 95% | 103 | 75% | 1 |
| Southampton | 141 | 122 | 87% | 75 | 53% | 3 |
| Roosevelt | 143 | 60 | 42% | 5 | 3% | 14 |
| Hampton Bays | 145 | 121 | 83% | 53 | 37% | 4 |
| Babylon | 150 | 139 | 93% | 90 | 60% | - |
| Cold Spring Harbor | 164 | 163 | 99% | 127 | 77% | - |
| Bayport-Blue Point | 168 | 157 | 93% | 101 | 60% | 3 |
| Seaford | 171 | 161 | 94% | 110 | 64% | 1 |
| Locust Valley | 174 | 172 | 99% | 134 | 77% | - |
| Mineola | 180 | 172 | 96% | 117 | 65% | 5 |
| Elwood | 190 | 183 | 96% | 138 | 73% | 2 |
| Glen Cove | 194 | 181 | 93% | 88 | 45% | 7 |
| Shoreham-Wading River | 204 | 185 | 91% | 102 | 50% | 1 |
| Amityville | 208 | 177 | 85% | 52 | 25% | 5 |
| Manhasset | 208 | 201 | 97% | 167 | 80% | - |
| Island Trees | 215 | 192 | 89% | 104 | 48% | 3 |
| Westhampton Beach | 220 | 191 | 87% | 115 | 52% | - |
| Mount Sinai | 220 | 207 | 94% | 142 | 65% | 2 |
| West Hempstead | 223 | 202 | 91% | 109 | 49% | 6 |
| North Shore | 223 | 214 | 96% | 149 | 67% | 2 |
| East Hampton | 231 | 202 | 87% | 97 | 42% | 3 |
| Lynbrook | 237 | 230 | 97% | 162 | 68% | 2 |
| Lawrence | 240 | 202 | 84% | 88 | 37% | 7 |
| Miller Place | 240 | 224 | 93% | 124 | 52% | 3 |
| Hempstead | 246 | 156 | 63% | 18 | 7% | 4 |
| Westbury | 255 | 212 | 83% | 37 | 15% | 6 |
| Huntington | 256 | 223 | 87% | 123 | 48% | 5 |
| Plainedge | 264 | 242 | 92% | 172 | 65% | 1 |
| Bethpage | 269 | 265 | 99% | 195 | 72% | 4 |
| Rocky Point | 270 | 243 | 90% | 93 | 34% | 4 |
| Hewlett-Woodmere | 274 | 264 | 96% | 199 | 73% | 3 |
| Wantagh | 283 | 278 | 98% | 217 | 77% | 1 |
| Rockville Centre | 285 | 281 | 99% | 245 | 86% | 2 |
| Harborfields | 286 | 271 | 95% | 205 | 72% | 1 |
| Sayville | 294 | 285 | 97% | 187 | 64% | 4 |
| Comsewogue | 295 | 262 | 89% | 144 | 49% | 4 |
| Kings Park | 296 | 276 | 93% | 181 | 61% | 2 |
| Islip | 302 | 299 | 99% | 191 | 63% | - |
| South Country | 302 | 248 | 82% | 90 | 30% | 12 |
| Garden City | 305 | 299 | 98% | 253 | 83% | - |
| Hauppauge | 308 | 289 | 94% | 191 | 62% | 1 |
| Roslyn | 308 | 298 | 97% | 248 | 81% | 2 |
| Eastport-South Manor | 316 | 290 | 92% | 171 | 54% | 2 |
| Long Beach | 319 | 282 | 88% | 163 | 51% | 4 |
| Riverhead | 328 | 282 | 86% | 149 | 45% | 5 |
| Herricks | 342 | 329 | 96% | 240 | 70% | 2 |
| Jericho | 348 | 344 | 99% | 313 | 90% | 4 |
| Deer Park | 350 | 327 | 93% | 166 | 47% | 6 |
| Central Islip | 359 | 273 | 76% | 42 | 12% | 15 |
| West Babylon | 375 | 347 | 93% | 202 | 54% | 5 |
| Copiague | 375 | 316 | 84% | 102 | 27% | 13 |
| North Babylon | 390 | 333 | 85% | 123 | 32% | 9 |
| Port Washington | 399 | 371 | 93% | 257 | 64% | 3 |
| East Islip | 408 | 398 | 98% | 259 | 63% | 8 |
| Uniondale | 412 | 357 | 87% | 114 | 28% | 5 |
| Baldwin | 423 | 388 | 92% | 156 | 37% | 5 |
| Plainview-Old Bethpage | 430 | 416 | 97% | 348 | 81% | 2 |
| Hicksville | 433 | 400 | 92% | 213 | 49% | 4 |
| West Islip | 456 | 433 | 95% | 301 | 66% | 4 |
| Bay Shore | 459 | 407 | 89% | 214 | 47% | 3 |
| South Huntington | 467 | 432 | 93% | 211 | 45% | 7 |
| Oceanside | 471 | 445 | 94% | 278 | 59% | 10 |
| Freeport | 472 | 371 | 79% | 122 | 26% | 4 |
| Farmingdale | 482 | 420 | 87% | 246 | 51% | 12 |
| Northport-East Northport | 482 | 445 | 92% | 282 | 59% | 3 |
| Syosset | 539 | 531 | 99% | 446 | 83% | 9 |
| Connetquot | 546 | 498 | 91% | 270 | 49% | 4 |
| Lindenhurst | 569 | 532 | 93% | 274 | 48% | 8 |
| Commack | 603 | 596 | 99% | 486 | 81% | 8 |
| Levittown | 611 | 588 | 96% | 422 | 69% | 12 |
| Massapequa | 620 | 584 | 94% | 407 | 66% | 8 |
| Great Neck | 623 | 599 | 96% | 487 | 78% | 5 |
| Three Village | 630 | 599 | 95% | 451 | 72% | 3 |
| Longwood | 638 | 533 | 84% | 182 | 29% | 10 |
| Patchogue-Medford | 647 | 564 | 87% | 145 | 22% | 9 |
| East Meadow | 652 | 578 | 89% | 357 | 55% | 7 |
| William Floyd | 692 | 554 | 80% | 204 | 29% | 11 |
| Valley Stream Central | 734 | 694 | 95% | 460 | 63% | 10 |
| Smithtown | 760 | 732 | 96% | 484 | 64% | 1 |
| Half Hollow Hills | 761 | 737 | 97% | 548 | 72% | 13 |
| Middle Country | 810 | 684 | 84% | 304 | 38% | 4 |
| Bellmore-Merrick | 954 | 923 | 97% | 696 | 73% | 9 |
| Sachem | 1,071 | 976 | 91% | 620 | 58% | 15 |
| Brentwood | 1,091 | 916 | 84% | 251 | 23% | 20 |
| Sewanhaka | 1,378 | 1,278 | 93% | 759 | 55% | 15 |