You will need a majority of families at your school to be signed up to Classlist and for them to be active on the site before it can carry sponsorship directly. However, even in the early days you can recommend Classlist to potential sponsors because they can run campaigns across the Classlist network of over 1600 schools, not just at your school.
Our sponsorship team will talk to them about the schools they would like to sponsor. Your PTA will get 50% of the revenue regardless of which schools the sponsor chooses. In other words, we reward you for your relationship with the sponsor and for introducing them to us, rather than where the campaign ultimately runs.