What was the earliest mode of distance education?

Answer: Education through correspondence

Explanation: Education through correspondence involved sending lessons, study materials, and assignments through the postal service so learners could study remotely without attending a physical class.

• Why this is the earliest: Postal systems in the 19th century made it possible to teach students at a distance before audio, radio, telephone, or internet-based methods existed.

• Historical examples: Isaac Pitman offered shorthand lessons by post from the 1840s; the University of London established an external degree programme from 1858, allowing remote students to study and earn degrees.

• How it worked: Students received printed lessons and exercises by mail, completed assignments at home, and mailed their work back for assessment and feedback.

• Advantages and limitations: Correspondence widened access and offered flexibility, but feedback was slow and interaction with instructors was limited.

• Later developments: Teleconferencing, video conferencing, and blended learning appeared in the 20th and 21st centuries after postal correspondence had already been established as a distance-education method.