The survey found two thirds of young people with cancer are unable to keep up with their education because of difficulties in accessing services, including home tutoring.
Families also complained that young cancer patients are unable to access counselling services outside of hospital. Parents and siblings have similar trouble accessing psychological support.
The charity is calling on children's services professionals to develop a co-ordinated approach to community care for young people with cancer and their families.
It says services should focus on offering young people the chance to choose between hospital and home care where possible.
Dr. Carol Easton, chief executive of Clic Sargent, said children should be able to access services of equal quality from home as well as hospital.
She said: "We would like to see a system which responds to a child's complete needs, not just clinical but also emotional and educational. Every child or young person with cancer should have access to a fully integrated community care team of professionals."
