Heli_port - a cynical person might question whether any school's aptitude tests are entirely unbiased,
Are you that cynical person you mentioned? If so to suggest they are biased is ludicrous .
IMHO indepenedent testing is rubbish, go to the schools and see what they say. If still you get no joy then i suggest you carry on. I know a number of pilots that failed aptitude assessments and are now flying professionally! and ignore cynics like G-sixty.