The aim of this randomized control trial is to examine effectiveness of individually tailored web- and mobile-based Acceptance- and Commitment Therapy interventions to promote adolescents' well-being and life-control and subsequently support their successful transition from basic education to upper secondary education. Our additional aim is to examine to what extent the effectiveness of the intervention varies according to intervention intensity and according to risk for school failure. The five-week structured intervention is delivered using the novel web-and mobile-based program Youth COMPASS following the principles of the Acceptance and Commitment Therapy (ACT). The Internet context is assumed to be particularly motivating for youth who enjoy spending time online using different social media. Internet-based interventions have several advantages; they can include more information and treatment components than traditionally delivered treatments and that intervention programs are accessible at any time and at any place. Another unique aspect of the Youth COMPASS is the fact that it is individually-tailored. Each participant have an individually assigned online coach who provides support and encouragement, reminds about Youth COMPASS, sends individualized feedback, and recommends different exercises. The study hypothetizes that the Youth COMPASS is more effective than school counseling as usual. More specifically, the Youth COMPASS is expected to be more effective when it is combined with face-to-face support than when support and feedback are provided only via the Internet. Also, the Youth COMPASS with no face-to-face support (online only) is expected to be more effective than receiving only regular school counseling. Finally, the Youth COMPASS is expected to be more effective for students at risk for school failure than for students without risk for school failure, especially when at risk-adolescents receive more intensive support (i.e., both online and face-to-face support).

The aim of this randomized control trial is to examine effectiveness of individually tailored web- and mobile-based Acceptance- and Commitment Therapy interventions to promote adolescents' well-being and life-control and subsequently support their successful transition from basic education to upper secondary education. Our additional aim is to examine to what extent the effectiveness of the intervention varies according to intervention intensity and according to risk for school failure. The five-week structured intervention is delivered using the novel web-and mobile-based program Youth COMPASS following the principles of the Acceptance and Commitment Therapy (ACT). The Internet context is assumed to be particularly motivating for youth who enjoy spending time online using different social media. Internet-based interventions have several advantages; they can include more information and treatment components than traditionally delivered treatments and that intervention programs are accessible at any time and at any place. Another unique aspect of the Youth COMPASS is the fact that it is individually-tailored. Each participant have an individually assigned online coach who provides support and encouragement, reminds about Youth COMPASS, sends individualized feedback, and recommends different exercises. The study hypothetizes that the Youth COMPASS is more effective than school counseling as usual. More specifically, the Youth COMPASS is expected to be more effective when it is combined with face-to-face support than when support and feedback are provided only via the Internet. Also, the Youth COMPASS with no face-to-face support (online only) is expected to be more effective than receiving only regular school counseling. Finally, the Youth COMPASS is expected to be more effective for students at risk for school failure than for students without risk for school failure, especially when at risk-adolescents receive more intensive support (i.e., both online and face-to-face support). The participants of the effectiveness study of the Youth COMPASS are selected from the participants of the broader longitudinal STAIRWAY (TIKAPUU in Finnish) - From Primary School to Secondary School study, which follows a community sample of Finnish adolescents (n~850) across critical educational transitions. The overall aim of the STAIRWAY project is to broaden our understanding of the individual- and environment-related factors that promote learning, well-being and successful educational transitions.

Inclusion Criteria:

• Adolescents (n = 120) who have risk for school failure (learning difficulties or low grade point average without learning difficulties)
• Randomly chosen adolescents (n=120) from the same classrooms who have no risk for school failure

Other researchers are encouraged to use the data; however, it requires a research plan and the permission of the research team. Also, at least one of the team members, who know the data well, should be a co-author in all the articles that are written from the data.

After 10 years of the data collection, those parts of the data that are not too sensitive (e.g., part of the questionnaire data), will be prepared in collaboration with a Finnish Social Science data Archive in a format that is easily accessible for other researchers. However, using data requires a research plan and the permission of the research team. Also, at least one of the team members, who know the data well, should be a co-author in all the articles that are written from the data.