Detailed close-ups of male and female genitalia, including infants during diaper changes and preteens in a bath.

Critics argue that the film’s "existential realism" crosses a line into the exploitation of underage nudity under the guise of art or education. Some viewers find the level of detail—such as a young boy's masturbation scene—to be "bizarre" and inappropriate for its intended teenage audience.

Portrayals of "playing doctor," falling in love, and the physical sensations associated with puberty.

Unlike many contemporary sex education materials that rely on diagrams or animations, Sexuele Voorlichting uses an all-amateur cast to depict real-life scenarios within a "normal" family setting. The documentary covers a broad range of developmental topics, including:

Narratives regarding menstruation (the protagonist Els discovers blood on her pajamas), wet dreams, and the process of ejaculation.

Conversely, some defenders view the film as a straightforward, honest documentary. They argue that children are sexual beings from birth and that providing explicit, factual information helps de-stigmatize the body's natural functions. This perspective aligns with a "sex-positive" approach often seen in Northern European education systems, such as in Sweden or Norway. Sexuele voorlichting (Video 1991) - IMDb