Real-Time Student Performance Dashboard with Reactive Analytics

Design a modular React dashboard that tracks student performance metrics in real-time using RxJS observables. The system must aggregate grade data from multiple sources (LMS, assessment APIs, manual entry), implement dynamic filtering by student cohort, grade level, and subject, and provide predictive learning risk indicators. Include robust error handling for data synchronization and implement WebSocket streaming for instantaneous updates. The solution should be scalable to handle 10,000+ student records with sub-500ms render times.