It is said that if a child (teenager) follows the step course, which is a Dutch youth training method, you should be able to start from then on at a 1600 ELO ra

It is said that if a child (teenager) follows the step course, which is a Dutch youth training method, you should be able to start from then on at a 1600 ELO rating. I would assume following the course is self-selecting, you only make it if it is fun and you are good at it, so take that for what it is worth.