Planet Youth was introduced in the West of Ireland in 2018 and following a successful ethical approval process in 2020 with the RCPI – Royal College of Physicians was introduced to Cavan and Monaghan in research collaboration with the RCSI – Royal College of Surgeons in Ireland. This five-year pilot programme has been initiated and developed by an Implementation Committee, made up of representatives who have a remit for Children and Young People. Some 2,000 post Junior-Cycle students across every second level school and Youthreach Centre throughout Cavan and Monaghan were invited to participate in the Planet Youth Survey and the results contained within these county reports are the first of their kind in both counties. Planet Youth is an international evidence-based primary prevention model, developed by the Icelandic Centre for Social Research and Analysis (ICSRA) at Reykjavik University. It was initially developed in order to reduce substance use rates amongst young people.