UCB Class difficulty

16 or 15 means the students need to take 5 or more classes per semester?
My son had 5 units from his AP test and took one summer class each year(5+3),
so he never took more than four classes in fall and spring semesters at his CC
except for one semester when he had a lab in addition to his four classes.

He should have 67 units or so to transfer. UCB has been his dream school,
but he is not sure if he can handle the workload as so many people around
him told him CC transfer could only earn Bs and Cs as UCB is lot more
difficult.

A lot of them said he should choose an “easier” college if he wants to
go to a graduate school. I do not think there is any easy college in UC
system, though.