The ESTRO Paediatric Radiotherapy Course offers a comprehensive overview of radiation oncology for children, focusing on the clinical aspects of paediatric malignancies, multidisciplinary management principles, and key radiation oncology challenges. Participants will gain familiarity with tumour-specific clinical approaches, contouring and planning considerations, and modern radiotherapy technologies, including proton therapy. The course also addresses late effects, toxicity profiles, quality assurance, and includes case presentations to illustrate practical clinical scenarios tailored to trainees and specialists in radiation oncology. The on-demand course is made of the pre-course recorded lectures that were made for the 2025 Paediatric Radiotherapy Course edition.