Indeed. A more standardised approach to both admissions and education itself in the state sector might restore confidence.
The system is completely screwed up. There are so many inconsistencies between schools that there's no such thing as a "standard" state education. Parents really can't be blamed for playing the system to the best of their abilities to ensure their kids have a decent education.
For the price of your taxes, your kids can get an education to rival any private school at a top grammar, a 'bog standard' education at a normal comp, indoctrinated in a religious horror show, left to survive as best they can in an anarchist hellhole or be dehumanised in one of those awful 'zero tolerance' academies that are so popular nowadays. It is one big mess for parents to deal with.