I want to know the answer to the following question:
What type of institute does secondary education also include?
All the background I'm provided with is that "Post-compulsory secondary education also includes vocational training institutes (Ινστιτούτα Επαγγελματικής Κατάρτισης, "IEK") which provide a formal but unclassified level of education.". Is that enough to answer the question?