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for most parts i dont agree, Indonesian has standard grading test in all of area indonesia. this doesn't reflect the real ability and the interest of Indonesian student, So in my humble opinion the grading system must reflect personal ability of student, not generalize them
Aston Index is an ability test.
Hardness test for minerals
The tests indicate the best match of the tasks and responsibilities of jobs by the answers provided by test takers
Some students might be very bright and have the ability to do well in a job or at college but, for various reasons, might not have received the highest grades. They might have high test scores but low grades or vice versa.
go to google and type in inelligence test and it will show you.add But before you get bogged down in a plethora of some quite narrow test instruments, reflect that a good measure of intelligence is the ability to solve new problems and challenges.
It distinguishes calciferous minerals from other minerals.
streak test, hardness test, scratch test, color test