| Abbreviation | Definition |
|---|---|
| JHS | Jamestown High School |
| JHS | Jasper High School |
| JHS | Jefferson High School |
| JHS | Jeffersonville High School |
| JHS | Jenison High School |
| JHS | Johnsburg High School |
| JHS | Johnson High School |
| JHS | Johnston High School |
| JHS | Jordan High School |
| JHS | Joshua High School |
| JHS | Juniata High School |
| JIBS | Jonkoping International Business School |
| JIDS | Japan International Dream School |
| JIGS | Jena International Go School |
| JIKS | Jakarta Indonesia Korean School |
| JIKS | Jakarta International Korean School |
| JIS | Jakarta Intercultural School |
| JIS | Japanese International School |
| JIS | Jerudong International School |
| JJHS | Jack James High School |