Then, the class ends, and another class of sixth graders arrives to learn the same things from him.

The first class of sixth graders was on April 19, 1948.

In each successive year, one additional class of 6th graders was added to the school.

More than a decade ago, he promised a class of sixth graders that if they finished high school, he would pay for their college education.

It opened to its first class of seventh graders the second semester of the 66-67 school year.

She invited three classes of fourth graders for my presentation.

There are two classes of 4th graders, each consisting of 27 students.

Not long ago I was talking to a class of third graders.

The first class of 9th graders were housed in a building known as the Burke House.

The labs I have are too complex for this class of 9th graders.