What does "good" mean?

I am teaching seventh grade English for the first time (formally).  For our first major writing project, I told the students they were not allowed to use the word "good."  "Good" doesn't tell me anything.  I want more accurate/specific language.
 
I was asked to sub for these students' first period religion class.  We were covering some Genesis material.  We discussed creation.  What did God say when He had viewed all he created?  It was "good."

Moral of the story:  Don't use the word "good"--unless you are God.

Sesquipedalian

I came across this word the other day--sesquipedalian.  Click link to learn the pronunciation .  This adjective means given to using long words.

When looking this up, I found the following site about long words:  Long Word Flashcards .  I wonder if I would ever use any of the seven words posted with the exception, of course, of singing **Supercalifragilisticexpialidocious.**