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