Teacher Planner is online lesson planning software that helps organize instruction across flexible calendar views while accommodating scheduling disruptions. The platform allows planning through day, week, and month views, transitioning seamlessly between detailed daily plans and broader overviews. The Bump feature shifts interrupted lessons forward while maintaining the sequence, eliminating manual adjustments when assemblies, snow days, or other changes occur. Standards tracking connects educational standards to lessons for centralized review. Reusable templates enable consistent lesson structures across similar class sessions. Print and export features generate readable plans for classroom use or administrative requirements. Sharing options provide colleagues with visibility into current plans. Accessible via web browsers on laptops, tablets, or desktops, the platform syncs across devices and saves work automatically. A free version is available without requiring a credit card.