The show contains some romantic subplots between students, including instances of kissing and suggestive dialogue. There is no graphic nudity, but there are some scenes involving sexual harassment and inappropriate behavior between students.

The series is exceptionally violent and features constant, graphic depictions of zombie attacks, including frequent blood splatter, dismemberment, and realistic depictions of physical injury. Viewers will see characters being mauled, bitten, and killed in brutal ways throughout the entire duration.

The dialogue contains frequent use of strong language throughout the series. Examples include variations of f*ck (frequently used in aggression), sh*t (used regularly), and various derogatory insults (used in anger between peers).

There are occasional scenes depicting characters, including students or adults, consuming alcohol in social settings or during moments of extreme stress. There is no major focus on drug abuse or addiction as a central plot point.

This series is highly intense and designed to terrify with constant jump scares, overwhelming feelings of hopelessness, and gruesome imagery. The psychological toll on the student survivors creates a persistent atmosphere of dread and trauma.

Emphasis persists on teamwork and self-sacrifice during extreme crises to protect peers.

Students exhibit resilience and courage, though the extreme environment often forces morally compromising choices.

Features a full ensemble cast of South Korean teenagers with varied socio-economic backgrounds and personality types.

No educational value indicated in available information.