The document provides guidelines for push notification best practices for different industries based on a study of top clients. For the ed-tech industry, it recommends sending push notifications from 12pm to 2pm as the best time for engagement. It found the highest click-through rate of up to 28.57% for ed-tech companies sending 10 to 20 notifications per day. The content should include information about course updates, admissions, discounts and offers to engage students and learners.