Students enrolled in one or two targeted secondary schools in each city who are going to receive the intervention (workshop)

Students from other centers with similar socioeconomic characteristics (relating to social characteristics and school location) to the centers.

PHASE 0. PRIOR TRAINING 1) Promoting protective assets related to violence together. 10-hour training session with 10-15 secondary school teachers; 2) Identifying our own protective assets against violence. This training activity will be addressed to targeted students. The activity will be carried out in four sessions of 1 hour in duration.

PHASE 1.PRE-PRODUCTION. 1) Participant activity on building story arguments; and 2) Construction of a technical and literary guide to the video capsules.

PHASE 2: PRODUCTION.- 1) Rehearsal of the script developed by each group; 2) Preparation and selection of environment, wardrobe and characterization of the roles and, 3) Filming of the video capsules.

PHASE 3: POST-PRODUCTION.- This phase consists of putting together the short film using the various video capsules.

PHASE 4: DISSEMINATION. A short film exhibition to provide a space where participants can present their video capsules and briefly explain the production process.

The Ambivalent Sexism Inventory, a 22-item self-report measure of sexism. Respondents indicate their level of agreement, on a 6-point Likert-type scale, with various statements. It is composed of two sub-scales that may be independently calculated for sub-scale scores or may be averaged for an overall composite sexism score. The first sub-scale is the hostile sexism scale, which is composed of 11 items designed to assess an individual's position on the dimensions of dominative paternalism, competitive gender differentiation, and heterosexual hostility, as previously defined. The second sub-scale is the benevolent sexism scale, which is composed of 11 items that aim to assess an individual's position on the dimensions of protective paternalism, complementary gender differentiation, and heterosexual intimacy.

Aggression Questionnaire-Refined measures four aspects of aggression: Physical Aggression and Verbal Aggression, which involve hurting or harming others and represent the instrumental or motor component of behavior; Hostility, which consists of feelings of ill-will and injustice and represents the cognitive component of behavior; and Anger, which involves physiological arousal and preparation for aggression and represents the emotional or affective component of behavior.

The Maudsley Violence Questionnaire measures a range of cognitions, relating to violent behavior, drawn from clinical and theoretical perspectives. This measure integrates justification of violence in response to threatened self-esteem and the legitimization of violence as central elements. Participants are asked to rate as True or False a series of statements. The scale is comprised of two factors: 'machismo' (42 items) and 'acceptance of violence' (14 items).

The Social Problem-Solving Inventory-Revised Scale is scale of 25 items. Items are answered in a 5-point Likert-type scale, from "this is not true" to "extremely true". Items are distributed in five sub-scales (5 items in each subscale) that evaluate functional and dysfunctional aspects of the ability to problem solve. The functional dimension is evaluated through two sub-scales: Positive Problem Orientation and Rational Problem Resolution; while the dysfunctional dimension is evaluated through the sub-scales Negative Problem Orientation, Avoidance Style and Impulsivity/Carelessness Style. These five dimensions allow obtaining a total score that corresponds to a general estimation of the ability to solve problems, in addition to the average scores in each of the dimensions.

The Subjective Happiness Scale is a global measure of subjective happiness that evaluates wellbeing as a global psychological phenomenon, considering the definition of happiness from the perspective of the respondent. It consists of four items with Likert-type responses with 7 options. Scores are the total number of items divided by the sum of the scores obtained.