Why are the Eligibility indexes for ACT and SAT different?
Why are the eligibility indexes used for ACT and SAT different? Using the SAT has a significantly higher number compared to the ACT. For example, when having both of the highest scores (1600 and 36) and including a GPA of 4, the SAT is 4800 compared to ACT's 1160[The formula for each is ((High School GPA × 800) + SAT (Evidence-Based Reading and Writing, and Math)= Eligibility Index) and ((High School GPA × 200) + (10 × ACT Composite Score)= Eligibility Index)]. Is it because the SAT is preferred more? And if not, then how does SDSU compare Eligiblity Indexes using SAT's to ACT's?
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2 answers
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SAT is used more in California but there are two different scales used by Cal State campuses. The one that shows up on campus websites is usually the SAT-based eligibility index. I'd suggest "converting" your ACT score to an SAT Score (which is difficult) but there are helpful charts online such as this: https://blog.prepscholar.com/act-to-sat-conversion.
But basically, more students submit SAT scores in general.
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You don't need to have a higher percentile, I think what you mean is that because the range is smaller, fewer ACT scores are in the 99th percentile. Like the other answer said, you should use a concordance table to compare scores from the tests. Here's the official one: https://www.act.org/content/dam/act/unsecured/documents/ACT-SAT-Concordance-Information.pdf