The use of multiple adjectives to describe something....

Hello,

This is my first time posting, so I think I should tell a little about myself. I am an amateurish grant writer, that means I write the letters of inquiry and prosposals to different foundations and organizations "begging" for financial support. It's for a bible college here in Maryland. Unfortunately, English is my second language, and I'm the only one in the bible college with plenty of spare time and my writing skills are far better than most of the staff. This is voluntary work only, it's not a paid position, and this is the first time my bible college has done this kind of thing, seeking for grants.

I think that's enough for now. I have a quick question. When you use multiple adjectives to describe something, do you have to put in commas after each adjective?

This is the exact sentence I'm using in one of the proposal letters.

"Thirty-five poor, foreign, prospective Deaf students...."

Instead should it say: "Thirty-five poor foreign prospective Deaf students...."

What is the correct rule for the use of multiple adjectives describing a person or a thing?

Thank you,

Dan