To be honest my DS (also gr 1) would think it a complete insult to have to read a book twice, then re-tell it again. I suspect he wouldn't do it either. His teacher currently has him reading an online book every night then doing the 10 on-line questions afterwards- which range from re-telling to vocab definition to inferring comprehension. DS is quite happy to do these as they are quick to do. It does make a difference if the books are exciting as he will happily chat about those but the typical school readers are not exciting at all.
Tricky...especially when he has to demonstrate competence...
