LOTS of difference!!!
In short...
SCATTest is given in three different levels...as an older 3rd grader, he'd probably be bored with the 2nd/3rd grade level. This level though does use higher norms....it's a 4th-6th test. Test is broken up into two 55 question parts, one for verbal, one for math. 50 questions on each side count, as 5 are "experimental". Each half only takes about 10-20 minutes (I think the kid has 20 minutes?) You are literally in and out well within an hour. You test at your convenience, and testing is on a computer at a Prometric test center. Testing is more aptitude than achievement, as the verbal is analogies and the math are comparisons, typically made without really solving the problem. As a chrono 4th grader, he really should get a high score on this one. Results come fast, typically within about 2 weeks.
ExploreYou must test on one of two test dates, in late January or late February. The test has 4 distinct sections, each one 30 minutes long (30-40 multiple choice questions). There is a break in the middle, and with getting the papers handed out, etc...this is a good morning of testing. The sections are math, reading, English and science. You get scores for each of the parts, as well as a composite. Scoring is against fall 8th grade norms, and the test is a standard 8th grade test. Testing is paper/pencil, with a calculator allowed. Testing is more "achievement" than aptitude. Results take forever, and have been known to surpass the 8 week mark,

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