<p>How do college calculate it? Do they distinguish between + and -...and do they take year-end averages or semester?</p>
<p>(i have one B in AP world history and then all As; I know I can prob. bring it up by end of year...will I still get a 4.0 then) </p>
<p>um specifically schools like caltech and mit..i can't find it on their sites</p>