Private South Australian schools fear funding shortfall under Gonski model TELL US: Should students be made to study a language? PRIVATE schools in South Australia are concerned base funding under the Gonski model will be too low and that extra funding for disadvantage will be too volatile because it uses unreliable data. Association of Independent Schools of SA chief executive Carolyn Grantskalns said there would be slightly more money for most schools over the next six years but final figures were not yet available. "At the moment we don't know if schools will be better off or worse off over time," she said. It may not be true that we won't lose a dollar in real terms. Ms Grantskalns said that the new funding model was extremely complex, lacked transparency in many areas of proposed implementation and was based on data that was not reliable. The Gonski review of school funding recommended school funding be based on a standard, per-student amount and additional resources provided on the basis of need as loadings for factors including school size and location, disability and socioeconomic status. "The loadings are volatile for a number of reasons not just because it's based on students in your school in that year but they are funded based on data that was not collected for the purpose it's being used for so it's not reliable," Ms Grantskalns said.