A free program for Windows, by BareBones Dev.

Power Planner is the ultimate tool for students to plan and organize their classes, including online syncing with mobile apps. It has grade calculation, manage semesters, a Google calendar, automatic reminders, and more. It is built specifically for Windows 10 and works on all desktop devices.

It allows you to enter classes, see the schedules, and room locations.

Sync everything that you need in school to easily access it on your gadgets.

It works with Google Calendar so you can see your classes and assignments right from the feature.