The coronavirus/COVID-19 pandemic is a public health crisis that has had - and will continue to have - profound mental health effects on individuals and families. The pandemic threatens the well-being of children and families in a multitude of ways; challenges include financial and job insecurity, confinement-related stresses (e.g., changes to work and education), relationships stressors (e.g., family discord), caregiving burdens (e.g., coparenting, balancing work with household management and child needs), and overall feelings of fear and insecurity. The consequences of these difficulties are likely to be complex and long-term, and as such studies are needed that focus on both risk and protective factors for individual and family-level well-being. COVID-19 has required significant and rapid lifestyle changes to adapt the functions and processes of family systems. Thus, the FACT study leverages a mixed-method design to examine individual- and family-systems-level adaptation and coping in the midst of COVID-19. Ultimately, results will be used to inform how to help diverse families cope during the ongoing pandemic.