Is it necessary to have insurance for the process of long stay VISA renewal?

Hi, I am planning to apply for my long stay visa renewal this month. So, I am wondering is it necessary to pay for insurance. Do they ask for that.

It's part of checklist!!!

Yes, being a student in france and for VISA renewal you must have insurance certificate, if you don't have ask you school to provide one. It's already mentioned in checklist for documents necessary for your VISA renewal.