The lexicon of the top500 ( The Encyclopedia for Classification Codes ) explains the codes and definitions in the world of economical classifications.
NACE Code 80.21 General secondary education
The NACE Code 80.21 is described as
General secondary education
Description This class includes:
· general school education in the first stage of the secondary level corresponding more or less to the period of compulsory school attendance
· general school education in the second stage of the secondary level giving, in principle, access to higher education
Subject specialization at this level often begins to have some influence even on the educational experience of those pursuing a general programme. Such programmes are designated to qualify students either for technical and vocational education or for higher education entrance without any special subject prerequisite
This class excludes: