You say you are an English teacher, so you have some idea. Why not save us all time and tell us what you think the answer is, and what you consider the differences to be. Then we can comment.
Of course, you know that 'will' is used for the future, and 'would' is used for the conditional. Perhaps you could give us some idea of what trouble you are still having with this after having learnt the language and becoming qualified to teach it.