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 |
| Amityville | 208 | 177 | 85% | 52 | 25% | 5 |
| Babylon | 150 | 139 | 93% | 90 | 60% | - |
| Baldwin | 423 | 388 | 92% | 156 | 37% | 5 |
| Bay Shore | 459 | 407 | 89% | 214 | 47% | 3 |
| Bayport-Blue Point | 168 | 157 | 93% | 101 | 60% | 3 |
| Bellmore-Merrick | 954 | 923 | 97% | 696 | 73% | 9 |
| Bethpage | 269 | 265 | 99% | 195 | 72% | 4 |
| Brentwood | 1,091 | 916 | 84% | 251 | 23% | 20 |
| Bridgehampton | 20 | 13 | 65% | 3 | 15% | - |
| Carle Place | 125 | 115 | 92% | 80 | 64% | - |
| Center Moriches | 111 | 98 | 88% | 33 | 30% | 3 |
| Central Islip | 359 | 273 | 76% | 42 | 12% | 15 |
| Cold Spring Harbor | 164 | 163 | 99% | 127 | 77% | - |
| Commack | 603 | 596 | 99% | 486 | 81% | 8 |
| Comsewogue | 295 | 262 | 89% | 144 | 49% | 4 |
| Connetquot | 546 | 498 | 91% | 270 | 49% | 4 |
| Copiague | 375 | 316 | 84% | 102 | 27% | 13 |
| Deer Park | 350 | 327 | 93% | 166 | 47% | 6 |
| East Hampton | 231 | 202 | 87% | 97 | 42% | 3 |
| East Islip | 408 | 398 | 98% | 259 | 63% | 8 |
| East Meadow | 652 | 578 | 89% | 357 | 55% | 7 |
| East Rockaway | 115 | 98 | 85% | 35 | 30% | 1 |
| East Williston | 137 | 130 | 95% | 103 | 75% | 1 |
| Eastport-South Manor | 316 | 290 | 92% | 171 | 54% | 2 |
| Elwood | 190 | 183 | 96% | 138 | 73% | 2 |
| Farmingdale | 482 | 420 | 87% | 246 | 51% | 12 |
| Fishers Island | 2 | 2 | 100% | 2 | 100% | - |
| Freeport | 472 | 371 | 79% | 122 | 26% | 4 |
| Garden City | 305 | 299 | 98% | 253 | 83% | - |
| Glen Cove | 194 | 181 | 93% | 88 | 45% | 7 |
| Great Neck | 623 | 599 | 96% | 487 | 78% | 5 |
| Greenport | 39 | 29 | 74% | 11 | 28% | 3 |
| Half Hollow Hills | 761 | 737 | 97% | 548 | 72% | 13 |
| Hampton Bays | 145 | 121 | 83% | 53 | 37% | 4 |
| Harborfields | 286 | 271 | 95% | 205 | 72% | 1 |
| Hauppauge | 308 | 289 | 94% | 191 | 62% | 1 |
| Hempstead | 246 | 156 | 63% | 18 | 7% | 4 |
| Herricks | 342 | 329 | 96% | 240 | 70% | 2 |
| Hewlett-Woodmere | 274 | 264 | 96% | 199 | 73% | 3 |
| Hicksville | 433 | 400 | 92% | 213 | 49% | 4 |
| Huntington | 256 | 223 | 87% | 123 | 48% | 5 |
| Island Trees | 215 | 192 | 89% | 104 | 48% | 3 |
| Islip | 302 | 299 | 99% | 191 | 63% | - |
| Jericho | 348 | 344 | 99% | 313 | 90% | 4 |
| Kings Park | 296 | 276 | 93% | 181 | 61% | 2 |
| Lawrence | 240 | 202 | 84% | 88 | 37% | 7 |
| Levittown | 611 | 588 | 96% | 422 | 69% | 12 |
| Lindenhurst | 569 | 532 | 93% | 274 | 48% | 8 |
| Little Flower | 2 | - | -% | - | -% | - |
| Locust Valley | 174 | 172 | 99% | 134 | 77% | - |
| Long Beach | 319 | 282 | 88% | 163 | 51% | 4 |
| Longwood | 638 | 533 | 84% | 182 | 29% | 10 |
| Lynbrook | 237 | 230 | 97% | 162 | 68% | 2 |
| Malverne | 135 | 116 | 86% | 59 | 44% | 3 |
| Manhasset | 208 | 201 | 97% | 167 | 80% | - |
| Massapequa | 620 | 584 | 94% | 407 | 66% | 8 |
| Mattituck-Cutchogue | 124 | 116 | 94% | 73 | 59% | 1 |
| Middle Country | 810 | 684 | 84% | 304 | 38% | 4 |
| Miller Place | 240 | 224 | 93% | 124 | 52% | 3 |
| Mineola | 180 | 172 | 96% | 117 | 65% | 5 |
| Mount Sinai | 220 | 207 | 94% | 142 | 65% | 2 |
| Nassau | 15,975 | 14,753 | 92% | 9655 | 60% | 205 |
| North Babylon | 390 | 333 | 85% | 123 | 32% | 9 |
| North Shore | 223 | 214 | 96% | 149 | 67% | 2 |
| Northport-East Northport | 482 | 445 | 92% | 282 | 59% | 3 |
| Oceanside | 471 | 445 | 94% | 278 | 59% | 10 |
| Oyster Bay-East Norwich | 124 | 114 | 92% | 77 | 62% | - |
| Patchogue-Medford | 647 | 564 | 87% | 145 | 22% | 9 |
| Plainedge | 264 | 242 | 92% | 172 | 65% | 1 |
| Plainview-Old Bethpage | 430 | 416 | 97% | 348 | 81% | 2 |
| Port Jefferson | 86 | 84 | 98% | 60 | 70% | - |
| Port Washington | 399 | 371 | 93% | 257 | 64% | 3 |
| Riverhead | 328 | 282 | 86% | 149 | 45% | 5 |
| Rockville Centre | 285 | 281 | 99% | 245 | 86% | 2 |
| Rocky Point | 270 | 243 | 90% | 93 | 34% | 4 |
| Roosevelt | 143 | 60 | 42% | 5 | 3% | 14 |
| Roslyn | 308 | 298 | 97% | 248 | 81% | 2 |
| Sachem | 1,071 | 976 | 91% | 620 | 58% | 15 |
| Sag Harbor | 66 | 61 | 92% | 38 | 58% | 1 |
| Sayville | 294 | 285 | 97% | 187 | 64% | 4 |
| Seaford | 171 | 161 | 94% | 110 | 64% | 1 |
| Sewanhaka | 1,378 | 1,278 | 93% | 759 | 55% | 15 |
| Shelter Island | 24 | 21 | 88% | 11 | 46% | - |
| Shoreham-Wading River | 204 | 185 | 91% | 102 | 50% | 1 |
| Smithtown | 760 | 732 | 96% | 484 | 64% | 1 |
| South Country | 302 | 248 | 82% | 90 | 30% | 12 |
| South Huntington | 467 | 432 | 93% | 211 | 45% | 7 |
| Southampton | 141 | 122 | 87% | 75 | 53% | 3 |
| Southold | 97 | 90 | 93% | 55 | 57% | - |
| Suffolk | 19,153 | 17,260 | 90% | 9355 | 49% | 265 |
| Syosset | 539 | 531 | 99% | 446 | 83% | 9 |
| Three Village | 630 | 599 | 95% | 451 | 72% | 3 |
| Uniondale | 412 | 357 | 87% | 114 | 28% | 5 |
| Valley Stream Central | 734 | 694 | 95% | 460 | 63% | 10 |
| Wantagh | 283 | 278 | 98% | 217 | 77% | 1 |
| West Babylon | 375 | 347 | 93% | 202 | 54% | 5 |
| West Hempstead | 223 | 202 | 91% | 109 | 49% | 6 |
| West Islip | 456 | 433 | 95% | 301 | 66% | 4 |
| Westbury | 255 | 212 | 83% | 37 | 15% | 6 |
| Westhampton Beach | 220 | 191 | 87% | 115 | 52% | - |