An organised form of doctoral education in at least two fields of arts or sciences, preparing for obtaining a doctoral degree. A doctoral student completes the school upon submitting a doctoral dissertation together with a positive opinion of the supervisor or supervisors.

• Act of 20 July 2018, the Law on Higher Education and Science
  Place of publication: (Dz. U. z 2023 r. poz. 742, z późn. zm.)