Hi Leander,
BallroomDancers.com has its own American style syllabus, which is over 20 years old, and actually predates the website itself, as well as DVIDA and the current revisions of ISTD and Arthur Murray.
Please review these articles to learn more about our syllabus, and feel free to reply if you have any more questions:
Which syllabus does this site follow?
https://www.ballroomdancers.com/Message_Board/view_messages.asp?Action=open_topic&Topic=47586NDCA Affiliated?
https://www.ballroomdancers.com/Message_Board/view_messages.asp?Action=open_topic&Topic=49800Regards,
Jonathan Atkinson
BallroomDancers.com