Based on sixth- to eighth-grade 2006 ISATs. For more information, see
| RANK | PERCENTILE | SCHOOL | CITY | DISTRICT |
| 1 | 0.8584 | Sunset Ridge Elem | NORTHFIELD | SUNSET RIDGE SCHOOL DIST 29 |
| 2 | 0.8407 | Carleton W Washburne | WINNETKA | WINNETKA SCHOOL DIST 36 |
| 3 | 0.8397 | Maple | NORTHBROOK | NORTHBROOK/GLENVIEW SCH DIST 30 |
| 4 | 0.8369 | Daniel Wright Jr High | LINCOLNSHIRE | LINCOLNSHIRE-PRAIRIEVIEW S D 103 |
| 5 | 0.8356 | Kennedy Junior High | LISLE | NAPERVILLE C U DIST 203 |
| 6 | 0.8319 | Edgewood Middle | HIGHLAND PARK | NORTH SHORE SD 112 |
| 7 | 0.8311 | Roosevelt | RIVER FOREST | RIVER FOREST SCHOOL DIST 90 |
| 8 | 0.8294 | The Joseph Sears | KENILWORTH | KENILWORTH SCHOOL DIST 38 |
| 9 | 0.8177 | Mcclure Jr High | WESTERN SPRINGS | WESTERN SPRINGS SCHOOL DIST 101 |
| 10 | 0.8155 | Central | GLENCOE | GLENCOE SCHOOL DIST 35 |
| 11 | 0.8151 | Marie Murphy | WILMETTE | AVOCA SCHOOL DIST 37 |
| 12 | 0.8139 | Wilmette Junior High | WILMETTE | WILMETTE SCHOOL DIST 39 |
| 13 | 0.8137 | Hinsdale Middle | HINSDALE | C C SCHOOL DIST 181 |
| 14 | 0.8128 | Clarendon Hills Middle | CLARENDON HILLS | C C SCHOOL DIST 181 |
| 15 | 0.8019 | Butler Junior High | OAK BROOK | BUTLER SCHOOL DISTRICT 53 |
| 16 | 0.7977 | Twin Groves Middle | BUFFALO GROVE | KILDEER COUNTRYSIDE C C S DIST 96 |
| 17 | 0.7972 | Deer Path Middle Sch West | LAKE FOREST | LAKE FOREST SCHOOL DIST 67 |
| 18 | 0.7867 | Alan B Shepard Middle | DEERFIELD | DEERFIELD SCHOOL DIST 109 |
| 19 | 0.7852 | Woodlawn Middle | LONG GROVE | KILDEER COUNTRYSIDE C C S DIST 96 |
| 20 | 0.7823 | Edison Middle | WHEATON | COMMUNITY UNIT SCHOOL DIST 200 |
| 21 | 0.7818 | Wood Oaks Jr High | NORTHBROOK | NORTHBROOK ELEM SCHOOL DIST 27 |
| 22 | 0.7637 | Highlands Middle | LA GRANGE | LAGRANGE HIGHLANDS SCH DIST 106 |
| 23 | 0.7617 | Washington Jr High | NAPERVILLE | NAPERVILLE C U DIST 203 |
| 24 | 0.7606 | Northbrook Junior High | NORTHBROOK | NORTHBROOK SCHOOL DIST 28 |
| 25 | 0.7596 | Charles J Caruso Middle | DEERFIELD | DEERFIELD SCHOOL DIST 109 |
| 26 | 0.7570 | Barrington Mdle Sch- Prairie Cmps | BARRINGTON | BARRINGTON C U SCHOOL DIST 220 |
| 27 | 0.7523 | Highland Middle | LIBERTYVILLE | LIBERTYVILLE SCHOOL DIST 70 |
| 28 | 0.7507 | Dr Bessie Rhodes Magnet Sch | SKOKIE | EVANSTON C C SCHOOL DIST 65 |
| 29 | 0.7480 | Lincoln Prairie | HOFFMAN ESTATES | SCHAUMBURG C C SCHOOL DIST 54 |
| 30 | 0.7470 | Barrington Middle Sch Station | BARRINGTON | BARRINGTON C U SCHOOL DIST 220 |
| 31 | 0.7438 | Gordon Gregory Middle | NAPERVILLE | INDIAN PRAIRIE C U SCH DIST 204 |
| 32 | 0.7416 | Bannockburn Elem | BANNOCKBURN | BANNOCKBURN SCHOOL DIST 106 |
| 32 | 0.7416 | Lincoln Jr High | NAPERVILLE | NAPERVILLE C U DIST 203 |
| 34 | 0.7413 | Plum Grove Jr High | ROLLING MEADOWS | PALATINE C C SCHOOL DIST 15 |
| 35 | 0.7340 | Sandburg Middle | ELMHURST | ELMHURST SCHOOL DIST 205 |
| 36 | 0.7335 | Madison Jr High | NAPERVILLE | NAPERVILLE C U DIST 203 |
| 36 | 0.7335 | Springman Middle | GLENVIEW | GLENVIEW C C SCHOOL DIST 34 |
| 38 | 0.7318 | Elm Place | HIGHLAND PARK | NORTH SHORE SD 112 |
| 38 | 0.7318 | Scullen Middle | NAPERVILLE | INDIAN PRAIRIE C U SCH DIST 204 |
| 40 | 0.7307 | Clifford Crone Middle | NAPERVILLE | INDIAN PRAIRIE C U SCH DIST 204 |
| 41 | 0.7291 | Cass Jr High | DARIEN | CASS SCHOOL DIST 63 |
| 42 | 0.7230 | Field | NORTHBROOK | WEST NORTHFIELD SCHOOL DIST 31 |
| 42 | 0.7230 | Rondout Elem | LAKE FOREST | RONDOUT SCHOOL DIST 72 |
| 42 | 0.7230 | Haines Middle | ST CHARLES | ST CHARLES C U SCHOOL DIST 303 |
| 45 | 0.7224 | Thomas Middle | ARLINGTON HEIGHTS | ARLINGTON HEIGHTS SCH DIST 25 |
| 46 | 0.7202 | South Middle | ARLINGTON HEIGHTS | ARLINGTON HEIGHTS SCH DIST 25 |
| 47 | 0.7185 | Lake Bluff Middle | LAKE BLUFF | LAKE BLUFF ELEM SCHOOL DIST 65 |
| 48 | 0.7179 | Benjamin Middle | WEST CHICAGO | BENJAMIN SCHOOL DISTRICT 25 |
| 48 | 0.7179 | Millburn | WADSWORTH | MILLBURN C C SCHOOL DIST 24 |
| 48 | 0.7179 | Lincoln Middle | PARK RIDGE | PARK RIDGE C C SCHOOL DIST 64 |