Dave Codd

Knowing that it's not enough to be an expert or knowledgeable in the subject matter but being able to engage the students on a personal level and to be motivated and excited in the presentation is equally important.

Variety is the best way to keep students engaged due to the fact that students, especially adults, have a remarkably short attention span.

That student retention has just as much to do with the instructor's enthusiasm for the subject as the student's willingness and excitement about the material being taught.