ETHISYNC’s Intervention Training Data Collection System is a platform that standardizes, collects, and manages clinical data generated during therapy and training for children with developmental delays, while supporting personalized intervention. Therapists can record correct and incorrect responses, prompting levels, and problem behaviors in real time during each session and monitor progress toward treatment goals. Ontology-based data integration and normalization technology enables data from assessment tools, diagnostic devices, and external applications to be integrated into a standardized clinical schema, allowing longitudinal management of each child’s developmental trajectory. The Agentic AI module analyzes patterns such as stagnation, regression, and mastery, and proposes program adjustments including difficulty level, treatment goals, and prompting strategies together with supporting evidence. These recommendations are applied only after therapist review and approval. Administrator dashboards and parent-facing progress reports further support the sharing of treatment status and developmental changes, creating a data-driven intervention environment that connects diagnosis, intervention, and home-based care.