extension courses

noun
1.
(in many universities and colleges) a program for persons not regularly enrolled as students, frequently provided through evening classes or classes in off-campus centers, or by correspondence.
Compare university extension.
Origin
1880-85
Examples from the web for extension courses
  • Does not include a building primarily used for adult ed or college extension courses.
  • He co-teaches all extension courses and co-authors and delivers extension publications and talks.