As Founding Designer at Zeal, I built the product’s UX and UI from zero, designing data tools that helped teachers make sense of student progress across Common Core standards. I spent multiple days per week in classrooms observing real use, during lessons, between classes, and in planning meetings, and redesigned based on what actually worked under time pressure. I led the design of teacher dashboards, proficiency heatmaps, goal-setting tools, and an adaptive classroom game that adjusted difficulty per student while maintaining shared competition. The result was a platform adopted by 100+ schools, where teachers could understand class progress in seconds and make better instructional decisions without wading through raw data.