This requirement may help promote habitual promptness, but it also shows how ruling systems can be faulty and unfair, and students could begin to think all authority isn 't fair; they might be less likely to abide by the rules if there is always a chance of injustice even if they do the right thing.
(Jordan Miller wrote in his article, "Being required to get to school on time prepares students for the future," demonstrating how promptness may be a requirement for a student in their future). Students will grow up and be expected to arrive on time to numerous events. However, the requirement to be early will come with a more justified punishment in the future than detention or other typical school punishments. It is important for schools to properly preps students for the future, but punishing them for things they cannot help does not teach them to do any