Hi Captain Spam
I am currently studying modular ground school and have only paid for that part of the training and are under no obligation to take any of their other courses on, so as far as i am aware 'if' i pass the exams I can still go elswhere for the flight training
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I believe that if you don't do the ground school with them you an't do the fllight training and it is because they say it will give you better oppurtunity for recruitment having been trained completely by OAT
The only downfall i find with grounschool is the lack of use of the virtual colege forum by the students, i am registeed on BGS and use their question bank for revision study as the response to any query is very good and very quick