<p>this is my 2nd semester here as an engineering undeclared major (going to switch to eecs soon though)</p>
<p>in the beginning, things may be tough because freshmen have the lowest priority. what happens is that people register for "safety classes," meaning that its just a backup plan, but these still count as enrolled people. so it may appear to you that the class is full, but once classes start, these people drop it and many seats appear. </p>
<p>personally, the <em>only</em> issue i had was when i tried signing up for english 135ac; the class was full, and people on the waitlist were processed by the english department. it is a popular upper division class. this means that english majors got the spots first, regardless of the waitlist number. i was like #3 on the waitlist, and eventually i was dropped from the course. i contacted a person in the department, and i got a course control number- a "code" that lets anybody join a class, usually given out to few people at the professor's request.</p>
<p>if i was an english major (not engineering), then i wouldve easily gotten in; however, i doubt you will have this problem since most people dont take upper division classes outside of their major until 3rd/4th year.</p>
<p>besides this, i have been able to register for my classes without any trouble; just wait a few days after classes start, and there will be plenty of seats</p>
<p>as for declaring your major, it depends on what college has the major. for example, biology (integrative or molecular cell) is in the letters and science college; from l+s, its hard to transfer to the college of engineering, BUT, you can pretty much switch to any major in L+S with ease. for example, if you signed up for biology, but then decided to switch to history, all you would have to do is fill out a form</p>
<p>there are some impacted majors though, which require an admissions process; for example, business (haas) and computer science</p>
<p>if you apply to the college of engineering when you filled out your app, then you can switch, like l+s, to almost every engineering major except for bioE and eecs; these require an admission process. if you apply as engineering undeclared, you can choose any engineering major, so long as you maintain a certain gpa.</p>
<p>also, if you are an engineer, you can switch to l+s as long as you are not a failing student</p>
<p>if you apply to any l+s major except for the impacted ones while doing your uc app, it will <em>not</em> have an impact on the decision.</p>