Joseph, Yes, the learning environment is critical to instructional success. I know many instructors that have not stepped back and looked at their classroom or laboratory for many years. They have let the paint peel, materials pile up, and bulletin boards deteriorate over a period of time and they never notice. Granted the physical setting of the classroom/laboratory in not all of teaching but it is a major part. The students need to feel comfortable as you say. In addition, the instructor must set the level of comfort within the class. Rapport with students does much to make learning progress. The students need to respect what the instructor is offering to them. The instructor cares about their learning success and has the experience necessary to assist them in becoming well trained professionals. This is a big challenge, but one that must be met if the learning environment is going to be a positive one. Gary