| Word | Description |
| SAE | Supervised Agricultural Experience |
| SAF | Student Assistance Foundation |
| SAM | School Administrators of Montana |
| SAT | Stanford Achievement Test |
| SBAC | Smarter Balance Assessment Consortium |
| SBRR | Scientifically Based Reading Research |
| SCED | School Codes for the Exchange of Data (developed by the National Center for Education Statistics) |
| SCEE | State Consortium on Educator Effectiveness |
| SCHIP | State Children's Health Insurance Program |
| SCLI | School Counseling Leadership Initiative |
| SDFSC | Safe and Drug-Free Schools and Communities |
| SEA | State Education Agency, In Montana MOPI is the SEA. |
| Section 504 | That portion of the Rehabilitation Act of 1973, which prohibits discrimination on the basis of disability |
| Section 619 | The section of the IDEA statute authorizing nationwide special education for pre-school age children with disabilities. |
| SEEK | Support Education Agency. In Montana MOPI is the SEA. |
| SEGBAC | State Employee Group Benefits Advisory Council |
| SEID | School Employee Identifier |
| SES | Supplemental Educational Services |
| SFA | School Food Authority |
| SFSF | State Fiscal Stabilization Fund |
| SHEP | School Health Education Profile |
| SIC | School Improvement Consultant |
| SIG | School Improvement Grant |
| SIG-RME | Special Interest Group-Research in Mathematics Education |
| SIMMS | Systemic Initiative in Montana Mathematics and Science |
| SIP | School Improvement Plan |
| Skills USA | VICA |
| SLDS | Statewide Longitudinal Data System |
| SNAP | Supplemental Nutrition Assistance Program (Food Stamps) |
| SOP | State Operated Program. Any facility operated by a state agency that provides special education. |
| SPC | State Presidents Conference (conducted in Washington, DC by National Officers for state pres. and state first vice president) |
| SpEd | Special Education |
| SPP | State Performance Plan |
| SRS/DDD | Montana's Department of Social and Rehabilitation Services/now Development Disabilites Division, now, after 1995 reorganization called the Department of Health and Human Services/Developmental Disabilities Program |
| SRSA | Small, Rural School Achievement Program |
| SRT | Scholastic Review Team |
| SSAP | Small Schools Accountability Process |
| SSDHPER | Society of State Directors of Health, Physical Education and Recreation |
| SSOS | Statewide Systems of Support |
| SSP | Small Schools Process |
| STD | Sexually Transmitted Disease |
| STEM | Science, Technology, Engineering & Math |
| STEP | Systemic Teacher Excellence Program |
| STW | School to Work |
| SUSAVICA | Skills USA Vocational Industrial Clubs of America |