Become a member? Do you want to become a member of Sportschool Aad van Polanen or register for a free trial lesson? Fill in your details below and we will contact you as soon as possible! I would like a free trail lesson. I would like to become a member. Both. Birth date of child: Man / boy Female / girl Sport: Judo Romping and tumble judo Jujutsu Karate Youth kendo Useful info: Lesson schedule Membership fees House rules