A distance learning system can be with or without online classes. If an institution offers virtual classes, the flexible learning opportunities extend into synchronous and asynchronous structures. Synchronous learning refers to real-time student-teacher interactions through video conferencing applications or online learning platforms (with built-in features to log in to virtual classes).

During the asynchronous learning duration, the student carries on studies remotely without visiting any physical vicinity. A distance learning program that does not offer online classes operates purely through the asynchronous option. In the present time, most institutions have their own online platforms wherein students and teachers access all the online content, connect with the teachers, track the learning progress, etc.