The main difference between the two tests includes a science section that
appears in the ACT but not the SAT. This section of the ACT is designed
to test a student’s critical thinking and analytical skill more
than specific scientific knowledge. The ACT also has a math section that
covers probability and statistics, which the SAT does not. The ACT also
doesn’t allow any calculator use during the tests, while the SAT
has one math section that allows the use of a calculator. The scoring
of both tests is also different. The SAT is scored on a scale of 400-600,
while the ACT is scored on a scale of 1-36.