10
South Hadley School District
- Plains Elementary School Calendar
- Mosier Calendar
- South Hadley High School Calendar
- Michael E. Smith Middle School Calendar
Other districts in Massachusetts state
- South Shore Charter Public (District)
- Somerville School District
- Shrewsbury School District
- Southborough School District
- Southeastern Regional Vocational Technical School District
- Southern Berkshire School District
- Spencer-E Brookfield School District
- Southwick-Tolland-Granville Regional School District
- Sturgis Charter Public (District)
- Sturbridge School District
- Stoneham School District
- Sudbury School District
- Stoughton School District
- Sutton School District
- Swansea School District
- Shawsheen Valley Regional Vocational Technical School District
- Salem School District
- Saugus School District
- Sherborn School District
- Silver Hill Horace Mann Charter (District)
- Shutesbury School District