Don't listen to flying schools' spin, get independent aptitude testing before you start training, and never underestimate the importance of qualifying when the job market is good.
I got independent aptitude testing via GAPAN and they said "sorry son you'll never make it". Went to OAA/CTC/FTE and passed their assessments with flying colours. Just passed my P1 and i've been told that i've got an interview with BA.
So much for aptitude testing
Preperation is key
Don't let silly tests destroy your dream