I found that certain kids didn't concentrate as much on the second test because they had already done it. It was sort of hard to get them all to concentrate and give full attention to do the test properly. After about 5mintutes the kids finally gave full attention. I then looked at all the results after I found that they went up, but unfortunately not by as much as I would have hoped.

Here are how much they went up. The first number is the first mark before music and the mark after the arrow is the mark after music. The average is below, it is the same before arrow is before music, after arrow is the average after music. 

Rock

Lola-22.5/44 ----> 23/44 

Andrew- 24/44 -----> 26/44 

Luke- 23/44 ----->23/44 

Anna- 20.5/44 ----->21/44 

Tom- 17/44 -----> 19/44 

Average: 21.4/44----> 22.4/44

POP

Jacob- 22.5/44 ----> 24/44

Zahara- 20/44 ---->21/44

Laura- 24/44 ----> 25/44

Ryan- 29.5/44 ---->34/44

Average: 24.25/44---->26.25/44

Classical

Celeste- 29/44 ------>34/44

Marc- 26/44 -----> 29/44

Jenna- 32/44 ----->37/44

Philip- 17/44 ----23/44

Average: 26/44-----> 30.2/44

To go see Graphs