Real-Time Student Engagement Funnel Tracking System

Develop a Node.js microservice that captures and analyzes student engagement metrics across digital learning platforms. Create event tracking middleware that logs interactions like course access, video watch time, quiz completion, and discussion board participation. Build a streaming analytics engine using RxJS that can generate real-time engagement scores, identify at-risk students, and trigger automated intervention workflows. Include probabilistic machine learning models to predict future engagement based on historical interaction patterns.