The complete piano player

[Daren]

The complete piano player is a progressive course of 5 books written by Kenneth Baker.
When I first met with my teacher he adviced this course for a begginner student.
Does anybody here on this forum know or even teach this course?
When you have completed the 5 books there is another book called the Complete piano player styles book which it recommends to be a complete allround piannist.
What standard level is this course compared with the Abrsm grades?

regards
daz