Just to be clear about this...
So no need to do any exams prior to the course?
And no exams during the course?
There are shed-loads of exams to do prior to the course!
You must have demonstrated knowledge to CPL level prior to starting the course which effectively means sitting the CPL exams.
There are no additional written exams during the course, but instead there are assessments of your performance, not actually graded or marked, but the school doing your course will want you to pass the test to support their reputation, so they're not going to let you take it unless you have a chance of succeeding. A good thing to ask of any school is their pass rate, with written proof.
I work with several Spanish instructors. They all (
AFAIK) took their courses in the UK, firstly to enhance their aviation English and maybe also because it might enhance their job prospects as an instructor...
TheOddOne