выпускниках

выпускниках

"Graduates" (plural form).

In this sentence, 'выпускниках' is used in the prepositional case plural, referring to graduates when talking about or discussing them.

Мы говорили о выпускниках на встрече.

We talked about the graduates at the meeting.

Here, 'выпускниках' again is in the prepositional case and plural, used to indicate graduates reminisced about by the teacher.

Учитель вспоминал о выпускниках с гордостью.

The teacher remembered the graduates with pride.

In this sentence, 'выпускниках' is used in the prepositional case, showing graduates described or listed for consideration in writing an article.

На доске был список выпускниках, о которых нужно было написать статью.

There was a list of graduates on the board about whom an article needed to be written.