The theme of my thesis is Secondary Education in Slovenia, which encompasses general, vocational, and technical education. Slovenia, as a Member State of the European Union, strives to achieve the European strategic objectives; secondary education being one of them. Because Slovenia is internationally involved, we can make comparisons with certain EU countries, which allows us to identify where our strengths lie and what improvements can be made within the field of secondary education. With the help of internationally comparable data (OECD, PISA Survey and Eurostat), the basis of which enable us to monitor the success rate of achieving international and European objectives, I will illustrate the current state of Slovenia’s secondary education in selected aspects (from the perspective of integration, graduation, funding of education, successful skill and knowledge acquisition) compared to Denmark and Spain. Studies have shown that our secondary educational system is comparable with the two previously mentioned countries, proven by the high graduation rate and the above average results achieved by our students. Based on the comparative analysis it is important to point out that the secondary educational system in Slovenia will face funding challenges in the near future.