School nursing is a whole different world from other nursing jobs. For my two cents, experience in nursing, an innate willingness to learn, critical thinking skills, and thick skin are what you need the most. You'll have administrative tasks and different schools use different programs to complete these tasks. If they are requiring those skills, they likely want to know if you are willing and able to use a computer with any level of efficiency and if you are trainable. Wishing you the best!