Yeah.
A part 141 school is required to use a syllabus which is specifically approved by the FAA regional office (FSDO) that has jurisdiction.
Which means they have to do the groundschool as approved.
Which means they can’t give you any formal credit for anything which you’ve done on your own.
So......don’t spend any money on it.
FAA website allows free download of training materials so download everything and start reading and ask your questions here on the forum.
https://www.faa.gov/regulations_poli...uals/aviation/
Start with the Airplane Flying Handbook and the Pilots Handbook of Aeronautical Knowledge.
Enjoy