<p>If you go to a smaller LAC you shouldn’t have much problem changing majors; many of them don’t have the “school of X” and “School of y.” They just have one college for everything.</p>
<p>It is easier to start out in a science and switch to Econ than the other way around. Econ has a few basic pre-reqs, but most of the upper-level courses require the same few pre-reqs so it’s not terribly regimented (in other words there’s not as much of you must take a before b, b before c, c before d, etc, as there is in science and engineering).</p>