<p>You just have to complete the 7 breadth courses for L&S by the time you graduate. So you can take them in your senior year etc etc. These 7 breadth courses are not generally referred to as pre-req classes.</p>
<p>Pre-reqs usually refer to classes specific to a major that need to be completed before you can declare that major. Some majors allow you to concurrently complete pre-reqs the semester you declare. Most people declare their majors by spring/end of their sophomore year.</p>
<p>R&C classes are requirements for L&S along with the 7 breadth classes, they are not referred to as pre-req classes as well. The other classes ucbalumnus is recommending are pre-reqs for majors. Classes like Math 1/16 series, Stat 2/20/21 etc are some of the more common pre-reqs for most majors.</p>