Both Ayer and Sherwood Elementary schools have non-traditional open classrooms with no foundation walls separating classes.

The three sets of fraternal twins were assigned to separate classes.

The facility had been built about 15 years before, without walls separating classes.

There are no walls separating most classes.

Shaft 371 possessed an automated sorting plant used to separate different classes of ore and to increase the overall ore grade.

Two groups were originally included in the Xiphosura, but since have been assigned to separate classes:

K-4 is separated by a.m and p.m classes.

It can separate classes with any asymptotic difference, whereas the time hierarchy theorem requires them to be separated by a logarithmic factor.

It seems to be easier to separate classes in space than in time.

The Bible school had separated classes for boys and girls.