List of Schools In Washington
| School Name | City | Grades |
|---|---|---|
| ICICLE RIVER MIDDLE SCHOOL 10195 TITUS RD | LEAVENWORTH | 6-8 |
| IDLEWILD ELEMENTARY SCHOOL 10806 IDLEWILD RD SW | LAKEWOOD | PK-5 |
| ILALKO ELEMENTARY SCHOOL 301 ORAVETZ PLACESE | AUBURN | PK-6 |
| ILLAHEE ELEMENTARY SCHOOL 19401 SE 1ST ST | CAMAS | PK-5 |
| ILLAHEE MIDDLE SCHOOL 36001 1ST AVE SOUTH | FEDERAL WAY | 5-8 |
| ILWACO SR HIGH SCHOOL 314 BRUMBACH | ILWACO | 7-12 |
| IMAGE ELEMENTARY SCHOOL 4400 NE 122ND AVE | VANCOUVER | KG-5 |
| INCHELIUM ELEMENTARY SCHOOL 1 HORNET AVE | INCHELIUM | PK-8 |
| INCHELIUM HIGH SCHOOL 1 HORNET AVE | INCHELIUM | 9-12 |
| INCHELIUM MIDDLE SCHOOL 1 HORNET AVE | INCHELIUM | 6-8 |
| INDEPENDENT SCHOLAR SCHOOL 34515 NORTH NEWPORT HWY | CHATTAROY | KG-12 |
| INDEPENDENT TECHNICAL REAL ACCESS TO COLLEGE & CAREER SCHOOL 13313 EAST BARKER | SPOKANE VALLEY | 9-12 |
| INDEX ELEMENTARY SCHOOL 436 INDEX AVE | INDEX | PK-8 |
| INDIAN TRAIL ELEMENTARY SCHOOL 4102 WEST WOODSIDE AVE | SPOKANE | PK-6 |
| INGLEMOOR HIGH SCHOOL 15500 SIMONDS RD NE | KENMORE | 9-12 |
| INGLEWOOD JUNIOR HIGH SCHOOL 24120 NE 8TH ST | SAMMAMISH | 7-9 |
| INGRAHAM HIGH SCHOOL 1819 NORTH 135 ST | SEATTLE | 9-12 |
| INSIGHT SCHOOL OF WASHINGTON 411 SOUTH SPARTAN AVE | FORKS | 9-12 |
| INTERAGENCY PROGRAMS SCHOOL 2445 3RD AVE SOUTH | SEATTLE | 6-12 |
| INTERLAKE HIGH SCHOOL 16245 NE 24TH ST | BELLEVUE | 9-12 |
| INTERNATIONAL COMMUNITY SCHOOL 11133 NE 65TH ST | KIRKLAND | 7-12 |
| INTERNATIONAL SCHOOL 445 128TH AVE SE | BELLEVUE | 6-12 |
| INTERNET ACADEMY 32020 1ST AV SOUTH | FEDERAL WAY | PK-12 |
| IRENE REITHER PRIMARY SCHOOL 954 EAST HEMMI RD | EVERSON | PK-5 |
| ISLAND JUVENILE DETENTION EDUCATION PROGRAM SCHOOL 501 NORTH MAIN ST | COUPEVILLE | 7-12 |
| ISLAND PARK ELEMENTARY SCHOOL 5437 ISLAND CREST WAY | MERCER ISLAND | KG-5 |
| ISLAND VIEW ELEMENTARY SCHOOL 2501 J AVE | ANACORTES | KG-8 |
| ISLANDER MIDDLE SCHOOL 8225 SE 72ND | MERCER ISLAND | 5-8 |
| ISOM INTERMEDIATE SCHOOL 8461 BENSON RD | LYNDEN | KG-5 |
| ISSAQUAH HEAD START SCHOOL 15025 SE 117TH ST | RENTON | PK |
| ISSAQUAH HIGH SCHOOL 700 2ND AVE SE | ISSAQUAH | 8-12 |
| ISSAQUAH MIDDLE SCHOOL 400 1ST AVE SE | ISSAQUAH | 6-8 |
| ISSAQUAH SPECIAL SERVICES SCHOOL 565 NW HOLLY ST | ISSAQUAH | PK-12 |
| ISSAQUAH VALLEY ELEMENTARY SCHOOL 555 NW HOLLY ST | ISSAQUAH | KG-5 |