Is it not about time that learner drivers ought to be taught to control a vehicle at special centres before being let loose on the road

I have just followed one (BSM) through Farnham Common to Farnham Royal. She was all over the road, occasionally crossing the white line, speed was erratic, causing oncoming cars to scrape the kerb to avoid her.

When we got to the Green Man pub, she mounted the island in the centre of the road and stopped. I stayed back, I did not have a clue where she was going. After bumping down from the island, she then started to cross the roundabout, causing a car coming from the right to brake. We then proceeded to head towards Farnham Royal, all over the road again, until she arrived at the large roundabout. Nothing coming (luckily) as she never slowed down, but she then tucked in tight to the roundabout and stopped !!!!!!!!!
I assumed she was turning right onto Britwell Estate, so I went to the left of her, as did the fellow behind me, but as he passed he had to veer hard to the left as she set off again and narrowly missed him, heading the same way as us.

She made being drunk, using a mobile etc, look in a different world.
What I don't understand, do these driving school cars not have dual controls

??
I do not have a thing about learners, we all had to learn, but in today's scenario, I really feel these learners should be able to control a car before being on our roads
Rant over
