Arcadia Hunter Academy was a huge institute. There are several different buildings inside the campus, and a lot of students are accommodated all the time.
Each year, over two thousand freshmen apply to the academy. Therefore, the academy needs to be very systematic with their explanations.
The tradition of the duels for the freshmen students is also a taxing event. But at the same time, it is something that is widely funded by the government.
After all, in a way, it is an opportunity for the future Hunter candidates to market themselves. Though not everyone is able to watch the duels, those who are allowed to do so can already cover the expenses.
In any case, since each student needs to duel at least once, the sheer amounts of duels that need to be processed is huge, considering the number of students reaching 2400.