One big part of your progress as a dancer is to be able to block out peripheral things, and concentrate on what you are doing. Often when beginners start with me, the first thing they say is "I can't do this with others in the room, or without my music, etc". My answer for beginners is always that they will always get more out of their coaching when they ignore the environment. If they are paying for coaching, then everything that distracts them comes at a cost. And, you can never control your environment to the extent that you can decide who looks at you, what music is played, how you feel at the moment, or even where you are in the room. This same advice I give to more advanced dancers - without focus, your coaching is ineffective. And if you give up your lesson to outside things, whether it is the whoops and hollers of others in the room, or even someone doing choreography that appears like yours, you have just wasted your time in the studio.