ATPL Ground School Advice
 

Good evening, I will be finishing up my PPL real soon and I was already looking for a Ground School where to study full time. The main problem is, there are too many Schools around, I cannot figure out which one to pick up. Any schools in UK are excluded from the list due to the fact UK will be leaving the EU and I don't know if I will be able to finish before that.
My budget would be around 5-6 grand.
I am looking for a school where the instructors are helpful, lesson in english, internal exams before the real ones at the CAA

Please give me as many advices as you wish