Testing for Intelligence?

I think when testing children you have to be very careful because some people are just poor test takers. People comprehend things differently, therefore, one can not expect the same results from every child. The only thing I think should be accessed if what grade level a child is preforming on and that is still hard because the children that set the standards on a grade level could have been much more intelligent than the children that are being tested now.
In Asia there are two types of assessments used "As a result, there are two fundamental strands of student assessment in elementary immersion programs: assessment of student learning in various subjects taught in the language, (e.g., math and reading); and assessment of the student’s proficiency in the immersion language. Both are used to evaluate individual student progress, to report to parents and the general community, and to support continual program improvement."(Tollefson, A., Bacon, M., Ennis, K., Falsgraf,  C., and Rhodes, N., 2013).