Oxford/Cambridge Graduate School- what are the chances for a Columbia College student?

<p>Hello,</p>

<p>I have no idea how the UK graduate school works so I have no idea what the chances are like.
It seems like I will end up with 3.7 GPA in Columbia College majoring in Biology.
I would like to apply for MSc in Neuroscience (the 1 year course).</p>

<ol>
<li><p>Should I test for the GRE? I heard it is not required.</p></li>
<li><p>What are the chances? Is it still hard to make it even if you have a 3.7 from a Ivy League school?</p></li>
</ol>

<p>Thanks!</p>