One of the primary reasons that researchers have concerns about the use of intelligence tests to predict children's academic achievement is that:

Lack of objectivity of measurement tools.

Explanation: According to W. James Popham, One of the main reasons why test scores standardized continue to be the most important factor in the evaluation of a school is deceptively simple. Most educators do not understand  really why a standardized test provides an equivocal evaluation about the effectiveness of the faculty of a school and they should understand.