Education Policy Comment by Save Our Schools. It reviews the latest PISA results by school sector.
Catholic and Independent schools had the biggest declines in PISA test results since 2009. Their students lost 1½ to nearly two years of learning in reading, mathematics and science. The falls in test scores were far bigger than for public schools.
The learning loss in Catholic and Independent schools occurred even though they were heavily favoured by government funding increases since 2009. Government (Commonwealth and state/territory) funding, adjusted for inflation, increased by $2,697 per student in Catholic schools and by $2,310 in Independent schools between 2009 and 2021 compared to $1,062 in public schools.