| 4* |
Quality that is world-leading in terms of originality, significance and rigour. |
3*
|
Quality that is internationally excellent in terms of originality, significance and rigour but which nonetheless falls short of the highest standards of excellence. |
| 2* |
Quality that is recognised internationally in terms of originality, significance and rigour. |
| 1* |
Quality that is recognised nationally in terms of originality, significance and rigour. |
| Unclassified |
Quality that falls below the standard of nationally recognised work. |
