An educational institution in which education is organised on separate principles. Persons aged 18 or older (as well as those who turn 18 in the calendar year in which they are enrolled) are admitted to schools for adults.

• Act of 7 September 1991 on the Education System
  Place of publication: (Dz. U. z 2021 r. poz. 1915)

• General secondary school for adults
• Primary school for adults