You may also come across the terms "synchronous" and "asynchronous" in reference to online or hybrid courses. These terms differentiate between classes that require weekly attendance at a live class session and those that do not. Review the definitions below for more information.

Synchronous online courses require you to virtually attend a class session eac h week, at the same time as your instructor and classmates. The class is a firm, weekly time commitment that cannot be rescheduled , just like an in-person course .

Asynchronous online courses allow you to learn on your own schedule, within a certain timeframe. You can generally access and complete lectures, readings, homework and other learning materials at any time during a one- or two-week period, prior to established deadlines.

Ready to learn more? Discover strategies to succeed in each format.