There are several factors that can impact the learning environment and students' experience in the classroom. These include the desk arrangement, lighting, color scheme, presence of distractions, routines and rules, and whether the teacher can easily observe all students. The document discusses how each of these elements can positively or negatively influence learning, concentration, and psychological comfort. It provides examples of classroom designs that utilize lighting, color, and furniture layouts to create a space conducive to student achievement and engagement. The teacher should consider all of these physical characteristics when preparing the classroom environment before the school year begins.