Distance education or distance learning is a field of education that focuses on teaching methods and technology with the aim of delivering teaching, often on an individual basis, to students who are not physically present in a traditional educational setting such as a classroom. It has been described as "a process to create and provide access to learning when the source of information and the learners are separated by time and distance, or both." Distance education courses that require a physical on-site presence for any reason (including taking examinations) have been referred to as hybrid

Hybrid Course

-Definition:Hybrid courses blend face-to-face interaction such as in-class discussions, active group work, and live lectures with typically web-based educational technologies such as online course cartridges, assignments, discussion boards, and other web-assisted learning tools...

 or blended

Blended learning

Blended learning refers to a mixing of different learning environments. It combines traditional face-to-face classroom methods with more modern computer-mediated activities. According to its proponents, the strategy creates a more integrated approach for both instructors and learners. Formerly,...

 courses of study.
Distance education dates to at least as early as 1728, when "an advertisement in the Boston Gazette...[named] 'Caleb Phillips, Teacher of the new method of Short Hand" was seeking students for lessons to be sent weekly.

Modern distance education initially relied on the development of postal service

Mail

Mail, or post, is a system for transporting letters and other tangible objects: written documents, typically enclosed in envelopes, and also small packages are delivered to destinations around the world. Anything sent through the postal system is called mail or post.In principle, a postal service...

s in the 19th century and has been practised at least since Isaac Pitman

Isaac Pitman

Sir Isaac Pitman , knighted in 1894, developed the most widely used system of shorthand, known now as Pitman shorthand. He first proposed this in Stenographic Soundhand in 1837. Pitman was a qualified teacher and taught at a private school he founded in Wotton-under-Edge...

 taught shorthand in Great Britain via correspondence in the 1840s.