Adolescence is a sensitive period in life and a time to redefine and learn new skills. In Norway, school health services provide individual health-promoting consultations with all eighth-grade students. As an aid to support these consultations, a dialogue tool called SchoolHealth was developed using a co-creation approach. SchoolHealth consists of a web-based health information form designed to be completed by the students and generates individual feedback reports to help the school nurses to prepare for the consultation and tailor it to the individual student's need. Our aims were to evaluate the feasibility and user experiences of SchoolHealth among students and school nurses using a mixed methods approach. A total of 79 eighth-grade students (69% of those invited) and four school nurses from three schools participated. Analyses indicated that SchoolHealth was feasible, promoted reflection among students, and helped prepare students and school nurses for the consultation.