Results
See the results of the 2021 MAIN Virtual Event 4 results from Sunday, March 14th.
| Category/Class | Unit | Rating |
| eShowcase | Blackwatch | N/A |
| Staged Multi-Equipment 19+ | Pegasus Too | Good |
| Staged Multi-Equipment 14-18 | Monroe HS Mixed Ensemble | Good |
| Robbinsville HS | Good | |
| Southern Regional Ensemble 4 | Excellent | |
| Staged Flag 14-18 | Southern Regional Ensemble 5 | Fair |
| Standstill Multi-Equipment 13 & Under | Spring-Ford Middle School | Good |
| Middle School | Haddon Heights Middle School | Excellent |
| West Perry Middle School | Excellent | |
| Independent Novice | Empress Winterguard | Excellent |
| Scholastic Regional A | Appoquinimink HS | Excellent |
| Avon Grove HS | Excellent | |
| Carolina Forest HS | Good | |
| Methacton HS | Good | |
| Pennridge HS | Excellent | |
| Sachem HS | Excellent | |
| West Perry HS | Excellent | |
| Scholastic A | Council Rock South HS | Excellent |
| Downingtown HS | Excellent | |
| Haddon Heights HS | Excellent | |
| Northern Valley HS at Old Tappan | Good | |
| Radnor HS | Excellent | |
| West Milford HS | Excellent | |
| Scholastic Open | South Brunswick HS | Excellent |
| Independent World | Light Winterguard | Good |