In the Netherlands, there are several levels of secondary education, the highest being the vwo, pre-university secondary education. In the past decades, many schools have merged with schools of higher or lower levels to form wide-scope community schools. Some gymnasiums, such as the Gymnasium Erasmianum are among the few remaining high-level-only schools, and has managed to avoid merging because of its high number of students. Another special property of Gymnasia is that they offer compulsory classes in the ancient languages Latin and Ancient Greek.