L.M.
There are a lot of variables here, but fact of the matter is a lot of students don't *know* they're going to fail until finals are tallied. The teacher can tell you he's having trouble, or in danger of not passing, but I am assuming you knew that since you were in contact with the teacher before she left on maternity leave. I know it is frustrating, but at this point dwelling on what might of been just isn't productive. Is the school working with you on how he can make up the credit over the summer?