Only one of the boys might have been troubled over poor grades.

With his poor grades, he knew college was not for him.

He was in his fifth year, having been left back for poor grades.

He spoke a very poor grade of English, to begin with.

Children get poor grades, and have difficulty getting along with others.

The narrator points out that it is not the time for the son to bring up any bad news such as poor grades.

The poor grade has not come from lack of effort.

She has poor grades and does not have any friends outside of the internet.

In my book, a 68 is a very poor grade indeed.

"If a student gets a poor grade the professor is likely to hear from them - both," he said.