In Rome, there is an extensive range of schools to choose from. Some 180 nursery schools are administered by the municipal authorities and the rest are private institutions, which provide top-quality education and child care at moderate costs. Rome has numerous international schools for pupils of different age, all of them offering high standards, although environment and educational philosophies vary from institution to institution. In these schools instruction is carried out in one or more foreign languages. Apart from state-controlled educational establishments, Rome hosts a substantial number of private schools, both religious and secular, that follow the Italian state curricula studorium. Higher education can be pursued at various pontifical universities and institutes as well as Research Institutes and Centre for post-graduate vocational training at an international level. Rome is the seat of La Sapienza University, the largest university in Europe and the second largest in the world by number of students.