I did my course like 3 years ago and it was really mind openend. I’ll recommend it to everyone who has a heavy stutter. But it is alot of hard work. You wouldn’t be cured, you need to practice everyday and stay in contact with coaches every week. For me, it failed. But this is because the speakinf techniques where more exhausting for me than speaking with a stutter. But it really learns to accept your stutter and don’t give a fuck what other people think about you.