So you haven't observed any, and you are going solely on exam results?
"Having a basic conversation" is not, sadly, a criteria on the GCSE. The new one either. It should be.
They will have to describe a photo, do a short role play (like "at the station") and then "general conversation" which will not be the type you are thinking of, it will be responding to questions (about school, the environment etc).
Disappointingly, very little has changed from the old one to the new one, in my opinion.
MFL is hard to teach, and the backdrop of "my husband and I were always bad at Spanish, it runs in the family". "Everyone speaks English" is very unhelpful.