<p>My guess would be CC 3.3 and seas 3.0-3.1. The core grades generously, but big CC departments like econ, history and poli sci curve classes to Bs sometimes a high B/low B+. in seas, many departments curve to B-s = 2.67. Because there are more kids in CC, the overall columbia gpa today would be something like ~3.25.</p>
<p>Average grades for first years is probably higher than average, because the concentration of core classes is high. Some say small senior seminars also curve well.</p>