Dr. Skinner has a reputation for being hard to work with, but Shaka actually agrees with his methods. Dr. Skinner doesn't want lame excuses, and he does want people to follow helpful procedures.
Shaka finds his course helpful. They do have a charged incident where Dr. Skinner tells the class he's not sure Shaka will be released because of his record. Shaka thinks it's a test and stays cool about it, however.