It was called the 'Qualifying Exam', AKA 'the qually'. As far as I remember, the papers were taken in class time. There was an 'intelligence test' which, I think, was taken in Primary 6 before the Maths and English ('verbal reasoning'} in Primary 7. The teacher put the fear of God into my mother by claiming that if I didn't improve my maths, I wouldn't get into the A stream in the secondary school. As it happened, I didn't find the maths very hard - though I may have missed something there! And, with at least six of my classmates, I did end up in the A stream, which was the only class that learned Latin and I've always wondered why it was necessary to pass the maths test for that!