Not sure exactly what they are proposing?
>Allowing kids to opt out of school at 16?
Always been done like this in the UK.
>College level course at 16?
The UK system is to specialise (eg only maths/physics/chemistry) from 16. So these courses are equivalent to US college level intro courses.
>Go off to college at 16?
Please no, it's bad enough with new 18years olds.
I'm not saying the UK system is correct, it's just what I have experience as a student/teacher in. It's also changed over the last 10years to be more like the US system.