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 |
| Nassau | 15,975 | 14,753 | 92% | 9655 | 60% | 205 |
| Suffolk | 19,153 | 17,260 | 90% | 9355 | 49% | 265 |
| Sewanhaka | 1,378 | 1,278 | 93% | 759 | 55% | 15 |
| Bellmore-Merrick | 954 | 923 | 97% | 696 | 73% | 9 |
| Sachem | 1,071 | 976 | 91% | 620 | 58% | 15 |
| Half Hollow Hills | 761 | 737 | 97% | 548 | 72% | 13 |
| Great Neck | 623 | 599 | 96% | 487 | 78% | 5 |
| Commack | 603 | 596 | 99% | 486 | 81% | 8 |
| Smithtown | 760 | 732 | 96% | 484 | 64% | 1 |
| Valley Stream Central | 734 | 694 | 95% | 460 | 63% | 10 |
| Three Village | 630 | 599 | 95% | 451 | 72% | 3 |
| Syosset | 539 | 531 | 99% | 446 | 83% | 9 |
| Levittown | 611 | 588 | 96% | 422 | 69% | 12 |
| Massapequa | 620 | 584 | 94% | 407 | 66% | 8 |
| East Meadow | 652 | 578 | 89% | 357 | 55% | 7 |
| Plainview-Old Bethpage | 430 | 416 | 97% | 348 | 81% | 2 |
| Jericho | 348 | 344 | 99% | 313 | 90% | 4 |
| Middle Country | 810 | 684 | 84% | 304 | 38% | 4 |
| West Islip | 456 | 433 | 95% | 301 | 66% | 4 |
| Northport-East Northport | 482 | 445 | 92% | 282 | 59% | 3 |
| Oceanside | 471 | 445 | 94% | 278 | 59% | 10 |
| Lindenhurst | 569 | 532 | 93% | 274 | 48% | 8 |
| Connetquot | 546 | 498 | 91% | 270 | 49% | 4 |
| East Islip | 408 | 398 | 98% | 259 | 63% | 8 |
| Port Washington | 399 | 371 | 93% | 257 | 64% | 3 |
| Garden City | 305 | 299 | 98% | 253 | 83% | - |
| Brentwood | 1,091 | 916 | 84% | 251 | 23% | 20 |
| Roslyn | 308 | 298 | 97% | 248 | 81% | 2 |
| Farmingdale | 482 | 420 | 87% | 246 | 51% | 12 |
| Rockville Centre | 285 | 281 | 99% | 245 | 86% | 2 |
| Herricks | 342 | 329 | 96% | 240 | 70% | 2 |
| Wantagh | 283 | 278 | 98% | 217 | 77% | 1 |
| Bay Shore | 459 | 407 | 89% | 214 | 47% | 3 |
| Hicksville | 433 | 400 | 92% | 213 | 49% | 4 |
| South Huntington | 467 | 432 | 93% | 211 | 45% | 7 |
| Harborfields | 286 | 271 | 95% | 205 | 72% | 1 |
| William Floyd | 692 | 554 | 80% | 204 | 29% | 11 |
| West Babylon | 375 | 347 | 93% | 202 | 54% | 5 |
| Hewlett-Woodmere | 274 | 264 | 96% | 199 | 73% | 3 |
| Bethpage | 269 | 265 | 99% | 195 | 72% | 4 |
| Hauppauge | 308 | 289 | 94% | 191 | 62% | 1 |
| Islip | 302 | 299 | 99% | 191 | 63% | - |
| Sayville | 294 | 285 | 97% | 187 | 64% | 4 |
| Longwood | 638 | 533 | 84% | 182 | 29% | 10 |
| Kings Park | 296 | 276 | 93% | 181 | 61% | 2 |
| Plainedge | 264 | 242 | 92% | 172 | 65% | 1 |
| Eastport-South Manor | 316 | 290 | 92% | 171 | 54% | 2 |
| Manhasset | 208 | 201 | 97% | 167 | 80% | - |
| Deer Park | 350 | 327 | 93% | 166 | 47% | 6 |
| Long Beach | 319 | 282 | 88% | 163 | 51% | 4 |
| Lynbrook | 237 | 230 | 97% | 162 | 68% | 2 |
| Baldwin | 423 | 388 | 92% | 156 | 37% | 5 |
| Riverhead | 328 | 282 | 86% | 149 | 45% | 5 |
| North Shore | 223 | 214 | 96% | 149 | 67% | 2 |
| Patchogue-Medford | 647 | 564 | 87% | 145 | 22% | 9 |
| Comsewogue | 295 | 262 | 89% | 144 | 49% | 4 |
| Mount Sinai | 220 | 207 | 94% | 142 | 65% | 2 |
| Elwood | 190 | 183 | 96% | 138 | 73% | 2 |
| Locust Valley | 174 | 172 | 99% | 134 | 77% | - |
| Cold Spring Harbor | 164 | 163 | 99% | 127 | 77% | - |
| Miller Place | 240 | 224 | 93% | 124 | 52% | 3 |
| Huntington | 256 | 223 | 87% | 123 | 48% | 5 |
| North Babylon | 390 | 333 | 85% | 123 | 32% | 9 |
| Freeport | 472 | 371 | 79% | 122 | 26% | 4 |
| Mineola | 180 | 172 | 96% | 117 | 65% | 5 |
| Westhampton Beach | 220 | 191 | 87% | 115 | 52% | - |
| Uniondale | 412 | 357 | 87% | 114 | 28% | 5 |
| Seaford | 171 | 161 | 94% | 110 | 64% | 1 |
| West Hempstead | 223 | 202 | 91% | 109 | 49% | 6 |
| Island Trees | 215 | 192 | 89% | 104 | 48% | 3 |
| East Williston | 137 | 130 | 95% | 103 | 75% | 1 |
| Shoreham-Wading River | 204 | 185 | 91% | 102 | 50% | 1 |
| Copiague | 375 | 316 | 84% | 102 | 27% | 13 |
| Bayport-Blue Point | 168 | 157 | 93% | 101 | 60% | 3 |
| East Hampton | 231 | 202 | 87% | 97 | 42% | 3 |
| Rocky Point | 270 | 243 | 90% | 93 | 34% | 4 |
| South Country | 302 | 248 | 82% | 90 | 30% | 12 |
| Babylon | 150 | 139 | 93% | 90 | 60% | - |
| Glen Cove | 194 | 181 | 93% | 88 | 45% | 7 |
| Lawrence | 240 | 202 | 84% | 88 | 37% | 7 |
| Carle Place | 125 | 115 | 92% | 80 | 64% | - |
| Oyster Bay-East Norwich | 124 | 114 | 92% | 77 | 62% | - |
| Southampton | 141 | 122 | 87% | 75 | 53% | 3 |
| Mattituck-Cutchogue | 124 | 116 | 94% | 73 | 59% | 1 |
| Port Jefferson | 86 | 84 | 98% | 60 | 70% | - |
| Malverne | 135 | 116 | 86% | 59 | 44% | 3 |
| Southold | 97 | 90 | 93% | 55 | 57% | - |
| Hampton Bays | 145 | 121 | 83% | 53 | 37% | 4 |
| Amityville | 208 | 177 | 85% | 52 | 25% | 5 |
| Central Islip | 359 | 273 | 76% | 42 | 12% | 15 |
| Sag Harbor | 66 | 61 | 92% | 38 | 58% | 1 |
| Westbury | 255 | 212 | 83% | 37 | 15% | 6 |
| East Rockaway | 115 | 98 | 85% | 35 | 30% | 1 |
| Center Moriches | 111 | 98 | 88% | 33 | 30% | 3 |
| Hempstead | 246 | 156 | 63% | 18 | 7% | 4 |
| Shelter Island | 24 | 21 | 88% | 11 | 46% | - |
| Greenport | 39 | 29 | 74% | 11 | 28% | 3 |
| Wyandanch | 109 | 75 | 69% | 7 | 6% | 12 |
| Roosevelt | 143 | 60 | 42% | 5 | 3% | 14 |
| Bridgehampton | 20 | 13 | 65% | 3 | 15% | - |