| Tier | Texts |
|---|---|
| S | Agamemnon, The Libation Bearers, Eumenides, Antigone, Oedipus Rex, The Medea, The Bacchae, Orestes |
| A | Hippolytus, Hecuba, Ion |
| B | Prometheus Bound, Rhesus, Elektra (S), Electra (E), Iphigenia in Tauris, Helen, Alcestis, Andromache |
| C | Seven Against Thebes, Ajax, The Women of Trachis, Iphigenia in Aulis, The Trojan Women, Herakles |
| D | The Persians, Oedipus at Colonus, Philoctetes, The Heracleidae, The Suppliants (E) |
| F | The Suppliants (A), The Cyclops, The Phoenician Women |
