> It seems like prerequisite classes are not being fulfilled.

FWIW I did a little digging, and EECS 127 indeed has explicit prerequisites of:

* Math 53 - Multivariable Calculus

* Math 54 - Linear Algebra & Differential Equations

* CS 70 - Discrete Mathematics and Probability Theory

This suggests the students are either taking those classes or have provided some kind of AP/test-taking credential to skip them.