I know just about all online schools will make you find your own preceptors and clinical rotations. However, a coworker who is also a nurse practitioner student at another school locally, told me they are required to find their own preceptors, and she is having a problem finding a pediatric rotation.
If you are picking a school, think about whether the school arranges clinical rotations for you, or do you have to find your own rotations and preceptors. This will take time and effort. In addition, many docs and nurse practitioners seem reluctant these days, because being a preceptor does take time and does not make their day any easier. Depending on your specialty, you will also need to find several rotations that might include, primary care, pediatrics, orthopedics, dermatology, gerontology, cardiovascular, occupational health, etc, etc.
Preceptors are a vital resource in the learning process. They need to have patience, time and a love to take someone under their wing.