@Culciambo

You must be referring to Flight Training Express ( FTE ) based out of Massey Ranch ( X59 ) near Edgewater Florida
Welcome to Flight Training Express
Notice the Aviation Pacific logo at the bottom of the page

The flight school by itself does not have a Part 141 certificate but I believe they have some sort of partnership with Aviation Pacific which allows them to sponsor student visas for international students
Only FAA Part 141 flight schools are allowed to sponsor student visas

As for obtaining a work permit , do your research as to how this would work out .
What laws will the flight school use ? how long will the work permit be valid etc ?

I believe there are flight schools out there that issue F1 visas which allow you to stay back and work for some time as OPT after you obtain the CFI
But you will have to leave once the OPT period is over and cant renew it
But it might be long enough to get the FAA ATP license which would open more opportunities for you once you go back home

M1 visas have something similar but you will only be allowed to work for 1 month for every 4 months you spent studying ( or something similar )