| Alterations | Notes | Replace window air conditioners with central AC systems | Very expensive to implement |
|---|---|
| Add suspended acoustical tile ceiling | Usually affects lighting as well and may affect ventilation |
| Place fabric wall dividers between tables in the cafeteria | Panels are expensive and create storage issues |
| Replace single-pane windows with well-sealed double-paned windows | |
| Construct walls in place of accordion-style dividers in open style classrooms | |
| Stagger door openings to classrooms (so that they are not adjacent or directly across the hall from one another) |
| Alterations | Notes |
|---|---|
| Lay an area rug that covers the majority of the hard-surfaced floor (more
expensive if wall-to-wall carpet is installed). |
|
| Install fabric wall panels/burlap bulletin boards | Can pose fire code issues. Code compliant materials could potentially fall in the high-cost category |
| Replace thin or hollow-core doors with solid, tight-fitting doors | |
| Add draperies to windows | May pose fire code issues |
| Add landscaping to the grounds immediately outside of classroom windows | Care needs to be taken to avoid creating indoor air quality problems |
| Alterations | Notes |
|---|---|
| Apply acoustic sealant to gaps between the walls and floors and between the walls and ceiling | Probably not effective |
| Arrange classroom furniture (breaking up large, open spaces with bookcases, dividers, etc.) | |
| Install hooks so that coats/sweaters are hung on the wall across from where the teacher speaks |