Why IQ test?

The objective of an IQ test has much differed compared to when it was first introduced in the 1900's by Alfred Binet. He was a French psychologist that created this test to segregate students of different intelligence as requested by the French government with the  desire of helping students who didn't meet the intelligence mark that was set in the IQ test. The students that didn't pass the test were given extra educational assistance so that they would be in par with the students that had passed the IQ test. This was a good method to give birth to a more intellectual generation. 

However,IQ tests are being used differently these days.The IQ test is more of a method to qualify an individual for a job or seats in the best universities.You not only have to have a passing mark but also an impressive one.So with the objective of the IQ tests that has changed, how will a brighter generation be born?