The Mentors in Violence Prevention programme: impact on students' knowledge and attitudes related to violence, prejudice, and abuse, and willingness to intervene as a bystander in secondary schools in England.

"Declarations Ethics approval and consent to participateFormal ethical approval was granted from Liverpool John Moores Research and Ethics Committee. Informed consent was obtained from all study participants before taking part. A passive informed consent process was used to recruit students to the evaluation study. Headteachers or school staff were recruited as gatekeepers and decided on the consent procedure most appropriate for their students, options included parental opt in, parental opt out or gatekeeper loco parentis. The study was carried out in accordance with the Declaration of Helsinki. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding We are grateful to Merseyside Violence Reduction Partnership who funded the evaluation."