A group of scientist developed a test that was able to predict late bloomers. In other words children who would become more intelligent as they got older. They tested kids in a classroom. First they gave them their IQ test to see where they were at and made their predictions. Then they told the teacher which students the test predicted were late bloomers. They came back several months later and tested the kids again and sure enough the kids that they predicted would score higher on later tests did. So did they have a test that could predict late bloomers? No

The first and last test were just standard IQ tests. It was the teacher’s expectation that certain students would show an increase in intelligence that made the test score higher for those students.

Knowing your IQ score is not as important as doing your best academically. Many students who have high IQs don’t bother to do their work properly and so get poor grades. On the other hand, some people with lower IQs apply good effort and get very good grades.

but of course different quizzes will give different marks !!

maybe ur quiz was easy one