The Odyssey

Violence (0–5): 3 — The Odyssey is an epic of war and adventure, and this retelling doesn't shy away from that. Battles, monsters, and deaths are present throughout — including sailors being eaten by the Cyclops and Scylla, and suitors being killed at the end. Violence is handled in the tradition of classical mythology — dramatic and consequential rather than graphic — but it is more sustained than modern children's adventure fiction.
Drugs / Alcohol (0–5): 2 — The Lotus-Eaters involves a substance that causes forgetfulness and passivity, and wine features in several scenes including Odysseus's encounter with Polyphemus. Handled in a mythological context.
Sex (0–5): 1 — Odysseus spends time with the Circe and Calypso in ways that imply romantic involvement, handled with classical indirectness. Nothing explicit.
Language (0–5): 0 — No modern profanity.
Themes (0–5): 2 — Themes of war, loss, loyalty, homecoming, and mortality run throughout. Some deaths of crew members may affect sensitive readers. The suitors' massacre at the end is significant plot violence. All within the tradition of classical epic storytelling.