Established Evidence Results

Intervention Components (click on component to see a list of all articles that use that intervention): YOUTH Adult-led Support/Counseling/Remediation PARENT/FAMILY Presentation/Meeting/Information Session/Event Notification/Information Materials (Online Resources, Information Guide) CLASSROOM Adult-led Curricular Activities/Training Enforcement of School Rules SCHOOL Assembly Reporting & Response System Bullying Committee Teacher/Staff Meeting Teacher/Staff Training School Rules Identification and Monitoring of/Increased Supervision in Targeted Areas POPULATION-BASED SYSTEMS COMMUNITY Media Campaign (Print Materials, Radio, TV)

Intervention Description: To examine the effectiveness of a widely disseminated bullying prevention program.

Intervention Results: Regression analyses controlling for baseline prevalence and school characteristics showed no overall effect on student victimization. However, when stratified by ethnicity/race, reports of relational and physical victimization decreased by 28% (RR = .72, 95% CI: .53-.98) and 37% (RR = .63, 95% CI: .42-.97), respectively, among white students relative to those in comparison schools. No similar effect was found for students of other races/ethnicities; there were no differences by gender or by grade. Students in intervention schools were more likely to perceive other students as actively intervening in bullying incidents, and 6th graders were more likely to feel sorry and want to help victims.

Conclusion: The program had some mixed positive effects varying by gender, ethnicity/race, and grade but no overall effect. Schools implementing the program, especially with a heterogeneous student body, should monitor outcomes and pay particular attention to the impact of culture, race and family influences on student behavior. Future studies of large-scale bullying prevention programs in the community must be rigorously evaluated to ensure they are effective.

Study Design: QE: pretest-posttest non-equivalent control group

Setting: US

Population of Focus: Not specified

Data Source: Not specified

Sample Size: Intervention (n=4959) Relational Victimization: Pretest (n=4607); Posttest (n=4480) Physical Victimization: Pretest (n=4531); Posttest (n=4419) Control (n=1559) Relational Victimization: Pretest (n=1408); Posttest (n=1456) Physical Victimization: Pretest (n=1373); Posttest (n=1448)

Age Range: NR

Intervention Components (click on component to see a list of all articles that use that intervention): YOUTH Adult-led Support/Counseling/Remediation PARENT/FAMILY Notification/Information Materials (Online Resources, Information Guide) Presentation/Meeting/Information Session/Event CLASSROOM Enforcement of School Rules SCHOOL Bullying Committee Assembly Reporting & Response System Teacher/Staff Meeting Teacher/Staff Training School Rules Identification and Monitoring of/Increased Supervision in Targeted Areas POPULATION-BASED SYSTEMS COMMUNITY Media Campaign (Print Materials, Radio, TV)

Intervention Description: This intervention study examined the prevalence of bullying in an urban/suburban middle school and the impact of the Olweus Bullying Prevention Program (OBPP).

Intervention Results: Statistically significant findings were found for 7th grade female students who received 1 year of the OBPP on reports of prevalence of bullying (p = .022) and exclusion by peers (p = .009). In contrast, variability in statistical findings was obtained for 8th grade females and no statistical findings were found for males. Following 1 year of the OBPP, teachers reported statistically significant improvements in their capacity to identify bullying (p = .016), talk to students who bully (p = .024), and talk with students who are bullied (p = .051). Other substantial percentile changes were also noted.

Conclusion: Findings suggest a significant positive impact of the OBPP on 7th grade females and teachers. Other grade and gender findings were inconsistent with previous literature. Recommendations for further research are provided along with implications for school health prevention programming.

Study Design: QE: time-lagged age-equivalent control group

Setting: US

Population of Focus: Not specified

Data Source: Not specified

Sample Size: Intervention (n=112); Control (n=158)

Age Range: NR

Intervention Components (click on component to see a list of all articles that use that intervention): PARENT/FAMILY Notification/Information Materials (Online Resources, Information Guide) CLASSROOM Adult-led Curricular Activities/Training Peer-led Curricular Activities/Training Training (Parent/Family) SCHOOL Teacher/Staff Meeting Teacher/Staff Training School Rules

Intervention Description: The Cyber Friendly Schools (CFS) group-randomized controlled trial measured the longitudinal impact of a whole-school online cyberbullying prevention and intervention program, developed in partnership with young people.

Intervention Results: The program was associated with significantly greater declines in the odds of involvement in cyber-victimization and perpetration from pre- to the first post-test, but no other differences were evident between the study conditions. However, teachers implemented only one third of the program content.

Conclusion: More work is needed to build teacher capacity and self-efficacy to effectively implement cyberbullying programs. Whole-school cyberbullying interventions implemented in conjunction with other bullying prevention programs may reduce cyber-victimization more than traditional school-based bullying prevention programs alone.

Study Design: Cluster RCT: pretest-posttest

Setting: Australia

Population of Focus: Not specified

Data Source: Not specified

Sample Size: Pretest (N=3382): Intervention (n=1878); Control (n=1504) Posttest 1 (N=2940): Intervention (n=1593); Control (n=1347) Posttest 2 (N=2874): Intervention (n=1582); Control (n=1292)

Age Range: 13-15

Intervention Components (click on component to see a list of all articles that use that intervention): YOUTH Peer-led Mentoring/Support Counseling CLASSROOM Adult-led Curricular Activities/Training SCHOOL School Rules

Intervention Description: To assess the impact of a peer counselling scheme on peer counsellors and the school community.

Intervention Results: Peer counsellors benefited from their involvement through an acquisition of transferable communication and interpersonal skills, and, compared to age-matched control pupils, had increased social self-esteem. There were no reductions in self-reported bullying and victimization, but in general pupils believed that there was less bullying in school and that the school was doing more about bullying, with year 7 students showing the most positive changes.

Conclusion: Peer-counselling schemes can improve self-esteem of peer supporters, and also impact positively on perceptions of bullying in the school; but impact on actual experiences of bullying is less clear, and there may be problems with the acceptance and use of such programmes by older students.

Study Design: QE: pretest-posttest design

Setting: UK

Population of Focus: Not specified

Data Source: Not specified

Sample Size: Pretest (n =375); Posttest (n=342)

Age Range: 11/14/2022

Intervention Components (click on component to see a list of all articles that use that intervention): Class Rules CLASSROOM_SCHOOL

Intervention Description: The objective of this trial was to investigate the impact, value for money and longer-term outcomes of the Good Behaviour Game.

Intervention Results: There was no evidence that the Good Behaviour Game improved any outcomes (hypothesis 1). The only significant subgroup moderator effect identified was contrary to expectations: at-risk boys in Good Behaviour Game schools reported higher rates of bullying (hypothesis 2). The moderating effect of the amount of time spent playing the Good Behaviour Game was unclear; in the context of both moderate (≥ 1030 minutes over 2 years) and high (≥ 1348 minutes over 2 years) intervention compliance, there were significant reductions in children’s psychological well-being, but also significant reductions in their school absence (hypothesis 3). The only medium-term intervention effect was for peer and social support at 24 months, but this was in a negative direction (hypothesis 4). After disaggregating within- and between-individual effects, we found no temporal within-individual associations between children’s mental health and their academic attainment (hypothesis 5). Last, our cost–consequences analysis indicated that the Good Behaviour Game does not provide value for money (hypothesis 6).

Conclusion: The Good Behaviour Game cannot be recommended based on the findings reported here.

Intervention Components (click on component to see a list of all articles that use that intervention): CLASSROOM Peer-led Curricular Activities/Training SCHOOL Teacher/Staff Training School Rules Media Campaign (Print Materials, Public Address System, Social Media)

Intervention Description: This study examined the effectiveness of a comprehensive, school-based intervention program, Creating A Safe School (CASS; The Ophelia Project) designed to reduce relational aggression (RA) and relational victimization (RV).

Intervention Results: Results revealed significant reductions in RA and RV among students who reported initially high levels of involvement. Findings also showed that decreasing approval of RA accounted for a significant amount of variance in changes in RA between pre- and posttest.

Conclusion: These results provide initial evidence of the effectiveness of the CASS intervention model in reducing RA among early adolescents.

Study Design: Quasi-experiment study: pretestposttest

Setting: US

Population of Focus: Not specified

Data Source: Not specified

Sample Size: N=405

Age Range: Mean: 11.4

Intervention Components (click on component to see a list of all articles that use that intervention): YOUTH Adult-led Support/Counseling/Remediation Peer-led Mentoring/Support Counseling CLASSROOM Peer-led Curricular Activities/Training SCHOOL Assembly Reporting & Response System Teacher/Staff Training School Rules Media Campaign (Print Materials, Public Address System, Social Media)

Intervention Description: To counter bullying at an Australian coeducational secondary school, staff and students co-operated in developing and implementing appropriate policies and procedures.

Intervention Results: Questionnaires assessing the incidence of bullying and related attitudes were completed by students in Years 7, 9, 10 and 11 in 1995 and again in 1997. Significant reductions in levels of victimization were recorded for Year 7 students only. Significantly increased support for anti-bullying initiatives was found among senior students (Years 10 and 11)

Conclusion: Anti-bullying activities directed and undertaken by students themselves received most approval from peers.

Study Design: QE: pretest-posttest

Setting: Australia

Population of Focus: Not specified

Data Source: Not specified

Sample Size: NR (The school has a total of ~1200 students; 4 of the 5 grades included in the study)

Age Range: NR

Intervention Components (click on component to see a list of all articles that use that intervention): YOUTH Adult-led Support/Counseling/Remediation PARENT/FAMILY CLASSROOM Adult-led Curricular Activities/Training Enforcement of School Rules Notification/Information Materials (Online Resources, Information Guide) SCHOOL Bullying Committee Reporting & Response System Teacher/Staff Training School Rules POPULATION-BASED SYSTEMS COMMUNITY Media Campaign (Print Materials, Radio, TV) Presentation

Intervention Description: The goal of this large population-based initiative was to reduce bullying by producing a quantifiable change in school climate using an established program and standardized measurement tool.

Intervention Results: After 1 to 2 years of program implementation, across cohorts, there were reductions in student self-reports of bullying others, and improvements in student perceptions of adults' responsiveness, and students' attitudes about bullying.

Conclusion: This initiative reaffirms the efficacy of the OBPP, emphasizes the importance of an identified coalition, and highlights several positive outcomes. It is recommended that the OBPP be implemented through the establishment of community partnerships and coalitions as consistent with the public health model.

Study Design: QE: pretest-posttest age-equivalent cohort

Setting: US

Population of Focus: Not specified

Data Source: Not specified

Sample Size: HALT! Schools Cohort 1: Middle school (n=0); High school (n=999) Cohort 2: Middle school (n=12972); High school (n=7436) PA CARES Schools: Middle school (n=9899); High School (n=6048)

Age Range: NR

Intervention Components (click on component to see a list of all articles that use that intervention): YOUTH Adult-led Support/Counseling/Remediation PARENT/FAMILY Presentation/Meeting/Information Session/Event CLASSROOM Adult-led Curricular Activities/Training Class Rules SCHOOL Teacher/Staff Meeting Teacher/Staff Training School Rules

Intervention Description: The purpose of the present study was to evaluate behavioural effectiveness of a school-based anti-bullying approach within Flemish schools. In addition, specific attention was given to the relationship between outcome findings and external support.

Intervention Results: The findings regarding the effects of the school-based anti-bullying intervention programme on the extent of bullying and victimisation showed a mixed pattern of positive changes in primary schools and zero outcomes in secondary schools. The findings regarding the effects of external support revealed limited outcomes.

Conclusion: The outcomes of the evaluation study confirm that a school-based anti-bullying intervention strategy can be effective in reducing problems with bullying, especially within primary schools. It was argued that the developmental characteristics of secondary school students interfered with the programme outcomes. In addition, the findings revealed no extra effects of specific training sessions.

Study Design: Cluster RCT: pretest-posttest

Setting: Belgium

Population of Focus: Not specified

Data Source: Not specified

Sample Size: Treatment with Support (n=284) Treatment without Support (n=277) Control (n=151)

Age Range: NR