not really a grammar issue, but more an interpretation issue ..

Hi,
without providing more context, I wonder if it is possible to know what the following sentence means

"the officer will calculate the rent for the last month you stay in the school housing

and deduct it from your security deposit"

Can you tell us which part or parts you are having trouble with?
eg Do you know what a security deposit is?

Cliv

You paid the deposit at the beginning of your stay. It may be the equal of two or three months rent, for example.
Then, as you live there, you pay rent every month.
When it comes time to pay the last month (because you are leaving soon), you don't pay the last month.
Your deposit is given back to you instead -- but not all of it. It's given back -- less the amount of one month's rent

sorry for not being clear -

I thought the statement means that part of the security deposit will be deducted to pay for the days I (over)stayed.

My roommate has a different interpretation - he says the statement means that part of the security deposit will be deducted,

as a penalty for the days I (over)stayed, AND I also need to pay the last month's rent (full month - e

Hi,
I doubt that it means you'll have to pay the rent and a penalty, but who knows? You need to ask them for clarification.

Good luck, Clive