The T&N Online Class (Trial & Nursery) introduces the core practices that underpin high-quality trialing and nursery operations across CGIAR breeding programs. Participants learn how standardized SOPs translate into day-to-day workflows—from seed handling, labeling, fieldbook preparation and plot layout, to data capture, QA/QC, and the handoff to downstream analytics—so results are consistent, traceable, and decision-ready across sites and seasons. The class draws on recent CGIAR efforts to harmonize T&N procedures and train station teams, emphasizing practical skills that improve data quality and operational efficiency.