I'm learning karate. It's entirely opposite your position in that I'm lined up with beginners of all ages, so I'm learning alongside 7/8 yo boys and girls (I'm middle aged); and often some parents watch the class.

It's difficult to be in the open like that - but it's a lesson in humility.

It has given me a great appreciation of my children who are also in the class (at higher grades), and been a fascinating lesson in learning and development. It's helped me in many ways - I'd recommend it.