<p>Ok so I am confused. I know you can change major in college,but I am confused. Can you only change major within BA or BS department,or can you change from history or pcycology etc other BA major to biology,physics or other BS majors. Means can you change from BA to BS? Or you can just change major within BS? Sorry if I sound stupid,but it would be great if someone clear this.</p>
<p>Of course you can! 
It just might take you a bit longer to complete if you’ve started the one, and the other has a ton of additional required courses for the first year or two.</p>
<p>It depends on the college/university you’re attending. Every one has different requirements; many don’t even have the BS degree any more.</p>
<p>Usually, though, the answer is Yes.</p>
<p>The BA/BS distinction is usually quite unimportant. Where both degrees are offered, a BS often indicates a little more intense concentration in the major field than a BA does, but either one is a bachelor’s degree, and neither one is anything higher than that.</p>
<p>As others have said, usually you can change your major from almost anything to almost anything else. You can start college intending to get a BS in chemistry and switch to a BA in classics, or you can start out pursuing a BA in English and switch to a BS program in physics. Bachelor of Science degrees are not awarded only in the sciences, nor are they always awarded to people who major in science. My own undergraduate degree is a BA with a major in geology.</p>
<p>There are a couple of caveats. Some programs within a college or university may have limited enrollment. In those cases, you may not be able to switch to a new major just because you want to; you may have to apply for admission to that program within the university. The same thing may happen if your intended new major is in a different division of your own university. For example, if you’re a French major in the College of Arts and Sciences and you want a change, you might have to apply to the School of Nursing to pursue a Bachelor of Science in Nursing degree, or to the School of Engineering if you decide you want to become an electrical engineer.</p>
<p>But to switch your major from psychology to biology or history or Spanish? Usually no big deal.</p>
<p>A lot of colleges don’t even offer a BS in the sciences. Most science majors at Cal Berkeley, for example, are in the College of Letters and Science which only offers a BA. So, math, bio and physics majors at Cal can only earn a BA.</p>
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<p>It’s been my experience that the BA usually means a few more lit/hume courses and the BS means a few more science courses. But those science courses don’t necessarily have to do anything with a major. A Bio major, for example, might have to take extra math, chem and/or physics for a BS, not just more bio courses.</p>
<p>Another example is a BS in Psych, which will usually include Calc and a few additional science courses; but the number of required Psych courses is the same (10) as for the BA.</p>
<p>In my mind, I was including courses in related fields with courses “in the major,” but I surely wouldn’t quibble with any of what bluebayou has said here. </p>
<p>My own alma mater offered very, very few Bachelor of Science degrees, so my personal experience is pretty limited.</p>
<p>Perhaps I was honoring the venerated CC tradition of talking through my hat.</p>