The effectiveness of school-based skills-training programs promoting mental health in adolescents.

INTERVENTION: A randomized controlled trial (RCT) will be conducted for both school‐based skills‐training programs targeting: 1) performance anxiety and 2) social and emotion regulation skills. Both skills‐training programs are compared with a control waitlist condition. CONDITION: Performance Anxiety; Social Skills; Mental Health; Stress PRIMARY OUTCOME: The main goal of this study is to examine the effectiveness of school‐based skills‐training programs targeting skills to deal with performance anxiety and social skills. ; ; Program targets: ; ‐ Skills to deal with performance anxiety (coping skills); ‐ Social skills; ; Direct program outcomes: ; ‐ Performance anxiety; ‐ Social anxiety SECONDARY OUTCOME: Mental health outcomes:; ‐ Psychological and physiological stress; ‐ Internalizing and externalizing behavior; ‐ Well‐being; ‐ Self‐esteem; ; Moderators: ; ‐ Student and parent characteristics (age, gender, ethnicity, education level, social support, and perfectionism, stressful life events, perceived parental pressure, treatment alliance and positive parenting behavior).; ‐ Trainer characteristics (gender, ethnicity, education level, level of experience and expertise). ; ‐ Program integrity. ; INCLUSION CRITERIA: Students in the first, second and third year of secondary school (all educational levels).