This thesis sought to lay the foundation for an application for tracking K-12 teacher activities. Its primary contribution is a descriptive model of K-12 activities. The work's starting point, the Faculty Activities System project, is an ETSU initiative that seeks to produce a tool for university-level academic accountabilities management. It was possible to adapt the FAS project's data model for K-12 activities. The resulting model was validated by experts in the field of education and teachers and administrators across Tennessee. A second strategy for model validation, using national and state legislation and expert recommendations, determined that the model did well at capturing teachers' professional growth and contributions to the school and community, but fell short at capturing student improvement, the learning environment, teaching strategies, portfolios, and self-assessment. The data model was realized as a multi-file XML schema, which was tested for well-formedness and validity using a sample data document.