There aren't really any advantages.

They charge parents high tuition fees while employing teachers with ordinary academic qualifications.

For that amount, you could hire a better private tutor.

I don't understand why any parents would still want to send their students there.

New teachers who are going for an interview should also think it over carefully.

At the initial interview, they say that people without experience will receive training and so on, but it's all just talk.

They send you straight onto the battlefield. After all, all they care about is collecting money.