How does a project manager find the user class ?

Being a project manager, I want to see the class of a user. I am using following code:

User u       = find("XYZ")
UserClass uc = u.class
string userclass = stringOf(uc)
print userclass

I am getting following error:

User/Group directory error: You do not have sufficient privileges

Please suggest the alternative way for a project manager to read the user class.