After Dutch surrender, the occupying German troops used the building as one of their headquarters.

Some gymnasia, including the Gymnasium Erasmianum maintained its profile as separate school.

Like all Gymnasia, Latin and Ancient Greek are mandatory courses in the curriculum of Gymnasium Erasmianum.

Every year the RGB organizes parties, theater, music and dance evenings and several cultural events.

The RGB has its own anthem in Latin: Every year the students elect a new board for the Bond.