Children at this age are naturally curious about themselves and are exploring concepts of who they are and their identities. Thrival Kits address a gap in evidence-informed mental health promotion programming for grades 4–6. We focused on this age group because according to ongoing youth suicide research conducted by the Manitoba Advocate for Children and Youth (see Phase One report here and Phase Two report here), youth who are most at risk of suicide begin to struggle with consistent school attendance after age 12. School classrooms remain one of the most common environments that deliver suicide prevention work, but the students who most need that information may not actually be in the classroom to receive it. Therefore, Thrival Kits targets grades 4–6, when nearly all children are still attending daily education programming, when students are naturally exploring their personal identities, and where there often exists strong bonds between the student and their regular homeroom teacher.