New analysis from the Adam Smith Institute (ASI) suggests that Keir Starmer's claim that the schools tax would raise £1.3bn is based on flawed assumptions.
The ASI found that Labour's policy would raise no money for the Treasury if between 10 and 15 percent of independent schoolchildren moved to the state sector and could cost the Treasury up to £1.6bn if that figure rose to 25 percent.
Even if just 5 percent of privately educated children migrated to state schools, this would likely lead to 5,150 redundant teachers.
Greece implemented a comparable policy in 2015 which led to the closure of many smaller independent schools. Labour's policy would almost certainly achieve a similarly detrimental result.