Unstable science scores

<p>Last time I took the ACT my science was 31, but on the Oct. ACT I only got a 26 and I thought I did really well on it too. </p>

<p>At first I thought it might be because I didn't fill in the bubbles completely, but that shouldn't make a difference should it? Has anyone else experienced this problem?</p>

<p>I've taken the ACT 3 times. My science score was 33 the first time, 36 the second, and 31 the third.</p>

<p>I don't know why my score was the lowes the third time (I thought I did the best the last time I took it)</p>

<p>ive taken it 3 times and science is the only score that ever went down...but then it went back up:
#1:33
#2:28
#3:33</p>