chalk it up to someone—(coll.) attribute smth. to or account for smth. by a person’s age, inexperience, etc.:
- I apologise for failing to recall what he said. Please chalk it up to me being an old guy and subject to memory failure.
chalk one up for someone—(coll.) put smth. to a person’s credit:
- I give Cameron credit for what he is as a showman, but I won’t chalk one up for him for what he isn’t—and he’s not an artist.