classes:  lecturer. Most of the time in class, he does not go into the content of the lesson but often talks about unrelated and necessary issues to the lesson.  curriculum. Most of the time in class, he does not go into the content of the lesson but often talks about unrelated and necessary issues to the lesson.  facility. Most of the time in class, he does not go into the content of the lesson but often talks about unrelated and necessary issues to the lesson.  general. Most of the time in class, he does not go into the content of the lesson but often talks about unrelated and necessary issues to the lesson.