Greece is a mountainous country with 12 million inhabitants located in Europe. Its capital is Athens, a city with over 3.5 million residents. Korydallos is a densely populated town of around 65,000 people located just 5 km from Piraeus and 10 km from Athens. It is home to the 5th Primary School of Korydallos, which was established in 1959 and has around 280 students aged 6-12 years old across 14 classes.