What is class A, B and C drugs?

Class A is illegal drugs that has a high risk of harming.
Class B is a drug that has medium risk of harming.
Class C is a drug that lower  risk of harming.

What are some of the laws and penalties?
The biggest penalty for having possession of marijuana(which is class C)is three months in jail and $500.00 fine. 
The highest penalty for importation, supplying or manufacturing is 14 years in jail.