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Purpose: We present our analysis of the existing Paediatric High Dependency Unit (HDU) admission policy at our institution and discuss our thoughts for its revision in the context of paediatric supratentorial tumour surgery., Materials and Methods: We screened our prospectively maintained database of all children undergoing supratentorial craniotomy for resection of paediatric brain tumours over a fifteen-year period. The post-operative course of each patient was reviewed, assessing the number of patients who had true HDU needs in the immediate post-operative period, and the relative depth of input from paediatric HDU specialists that each patient received., Results: Forty-three patients underwent craniotomy for supratentorial tumour resections during the study period. The median age of the children was 8 years old. Forty-two patients in the study cohort did not require any HDU-level monitoring or treatment post-operatively; all these patients were able to be discharged from HDU to a standard ward bed very rapidly post-operatively. Only one patient (2%) from the study cohort had any tangible HDU needs in the acute post-operative period, comprising of invasive cardiovascular monitoring and repeated blood transfusions. This child's tumour was known to be large, highly vascular, and invasive pre-operatively., Conclusions: We would advocate a rational and nuanced approach with regards to predicting which children are most likely need paediatric HDU care following supratentorial craniotomy for resection of a brain tumour. This rationalisation could improve resource availability and reduce financial burdens upon paediatric neurosurgical units.