Nis is the third largest city in Serbia, located 237km southeast of Belgrade. It has a population of over 260,000 people and is a center of culture and education. Grammar School "9. May" is one of four grammar schools in Nis, located in the city center. The school has around 700 students and 90 teachers who learn in 30 well-equipped classrooms. It is known for specialized classes in athletics and IT, and its students regularly participate in competitions and humanitarian projects.