| Type of intervention | Nature of intervention | Frequency, duration and educational materials | Facilitator’s profile | Targets of the intervention | Elements for evaluating interventions |
| Intervention “A” | Participatory educational talks (PET) | Frequency and duration: 5 × 2 45-minute sessions for 6 months Material: A guide developed based on the needs expressed | An external expert from outside the school, specializing in adolescent health | Students aged 14 - 19 attending a public school | Knowledge, Attitudes and practices of students in connection with the topics |
| Intervention “B” | Participatory and educational talks (PET) followed by discussions in small groups of 10 participants | Frequency and duration: 5 × 2 45-minute sessions for 6 months Material: A guide developed based on the needs expressed | An external expert from outside the school, specializing in adolescent health | Students aged 14 - 19 attending a private school | Knowledge, Attitudes and practices of students in connection with the topics |
| “Control” | Life education lecture | Frequency and duration: 5 × 2 45-minute sessions for 6 months Material: Life education syllabus developed by the central life education service | School teacher, qualified life education teacher, previously trained by the central life education service | Students aged 15 - 19 attending a Catholic school | Knowledge, attitudes and practices related to course topics discussed |