| Abbreviation | Definition |
|---|---|
| IMSG | International Management School Geneva |
| IMSP | International Montessori School of Prague |
| IMSS | International Mass Spectrometry School |
| IMTE | Institute of Management Technology, Enugu (Nigeria) |
| INMS | Isaac Newton Middle School |
| INSPIRE | Investing in Neighborhoods and Schools to Promote Investment Revitalization and Excellence |
| IOTSS | Intensive Ottoman and Turkish Summer School |
| IOTSS | Intensive Ottoman Turkish Summer School |
| IPASS | Illinois Physics And Secondary Schools |
| IPES | Iroquois Point Elementary School |
| IPLC | Irving Park Lutheran Church |
| IPS | Indianapolis Public Schools |
| IPS | Inverness Primary School |
| IPSB | International Professional School of Bodywork |
| IPSC | Ispahani Public School College, Chittagong |
| IPSC | Ispahani Public School & College, Chittagong |
| IPSCR | Indirapuram Public School Crossings Republik |
| IPSD | Indian Prairie School District |
| IPSL | International Pacific School of Law |
| IQS | Innovative Quality Schools |