Background: The effect of COVID-19 on pediatric trauma rates is still largely under investigation. With the potential need to reallocate human and financial resources at this challenging time, it will be useful to have detailed descriptions of the rates of pediatric trauma and understanding of how the pandemic affects these rates. Questions/Purposes: We sought to describe the effect of the COVID-19 pandemic on the number of acute pediatric trauma admissions and procedures performed in a level-I trauma center in Cork University Hospital, Ireland. Methods: We compared the number of acute traumatic pediatric admissions and procedures that occurred during the first 4 weeks of a nationwide lockdown due to COVID-19 with that of the same 4-week period in each of the preceding 11 years. Seasonal variables were measured and controlled for using multivariate regression analysis. Results: A total of 545 pediatric patients (under 16 years of age) were included. Over 12 years, the lowest number of acute traumatic pediatric admissions and procedures was recorded during the 2020 pandemic. There was a significant correlation between the number of school days and the number of acute traumatic admissions, as well as the procedures performed. The relationship between the number of school days and the number of trauma procedures was evident even when controlling for confounder variables of seasonal variation. Conclusion: The COVID-19 pandemic significantly reduced the number of acute traumatic pediatric admissions and procedures performed in our level-I trauma center, likely because of a reduction in school days. With the reopening of schools, playgrounds, and sporting events, an increase in pediatric trauma admissions is anticipated. The results of this study can help prepare institutions and regulatory bodies to plan appropriately for this new phase.