1) The representatives are from SI SERRA DE NOET High School in Berga, Catalonia. They are students in 3rd ESO A.
2) In Spain, high school has four courses that typically correspond to ages 12-16. Students are currently in their 3rd course, ages 14-15.
3) This year, classes are from 8:15am to 2:45pm, all in the morning, unlike last year when classes were split between morning and afternoon with lunch in between.