The Problem of Pain was always a back-up book, one to use if the main book had already been read. I wasn't part of the discussions about which books to keep, but I can speculate. 
This is an excellent book, but it's not one that should displace any of the books that are currently on the schedule. Also, I think most students would appreciate this book more at an older age, in my opinion.
I am really looking forward to using the new schedule. I was already paring down the old one. The addition of the biographies was something I hadn't expected but am excited about. Missionary biographies helped me so much as a young person, and I see that they could be important for my kids as well.
This is an excellent book, but it's not one that should displace any of the books that are currently on the schedule. Also, I think most students would appreciate this book more at an older age, in my opinion.I am really looking forward to using the new schedule. I was already paring down the old one. The addition of the biographies was something I hadn't expected but am excited about. Missionary biographies helped me so much as a young person, and I see that they could be important for my kids as well.
Kathy
For we are God’s handiwork, recreated in Christ Jesus, that we may do those good works which God predestined for us, that we should walk in them.
For we are God’s handiwork, recreated in Christ Jesus, that we may do those good works which God predestined for us, that we should walk in them.