The purpose of this study was to create a tablet-based, social history screening tool called Family fIRST and evaluate its feasibility and usability in a school-based medical clinic. A mixed methods study design was used to examine quantitative and qualitative outcomes of a survey and semi-structured interview completed by families and physicians. The majority (87%) found the survey easy to understand. Themes for improvement included more free-form space and increased sensitivity around question wording. Clinic physicians felt Family fIRST increased discussion around social history and suggested the tool should help link to suggested resources. Demographic results showed that 12 of 29 (43%) parents had income less than $15 000 and 19 of 29 (65%) were unemployed. Family fIRST was a well-received and feasible tool to implement at the school-based medical clinic. Preliminary results show that families attending the clinic have increased prevalence of negative determinants of health; social history should therefore represent a key area of focus at the medical visit in order to optimize clinic support of families.