The characters Max and Anouk are still in the 7th grade and are still 12 years old in the second season, even though it is set a year later
Even though the characters play teenagers, most of them are already in college in real life.
Brugklas won the 'Gouden Stuiver' for best Dutch children's television series in 2017.
The character 'Max' is portrayed as a student in season 4 but as a teacher in season 7.