| Usability QA | |
| User | Instructor of the course |
| Problem | Issue while comparing the grades of students in one class |
| Environment | Runtime |
| Artifact | System |
| Response | Interface is familiar/usable to the user |
| Tactic | Aggregation, Show multiple views, task model |
| Rational | Provide a clear interface to the user along with some helps so that new user should know how to use and do. |