<p>Hello,
I am new to TeleBEARS and Berkeley, and one point caught my attention. I noticed that some courses have two sections with different class durations. Some have three classes per week with each 60 minutes, and the other section have 2 classes with 90 mins per week. Why this is so? </p>
<p>And, I see that one of the courses people prefer to be waitlisted on the 3<em>60 section while on the 2</em>90 section there is free space?</p>