Have a curiousity question what is the difference between the two tests? My 8th grade son took both tests for high school placement what I find odd is that on the MAT8 he scored at the 28th percentile rank on the math portion and on the Iowa he scored at the 60th. This seems to be a pretty big difference. Do the tests test different aspects of math knowledge? The tests were taken within a month of each other with the MAT8 taken 1st. I don’t think 1 month of instruction would make that much of a difference. He is in an LD math class this year and does get individual instruction when needed. With his scores this far apart I wonder what type of math he should take next year. The LD class is a pre-Algebra class and he is getting an A. I feel he is doing well in this class because it does go slowly and individual help is available. What are your thoughts?