I get confused about how to use "a" and "an" correctly. The question of "a" vs "an" should be decided by the pronunciation of the word that follows the article, right? But I've seen the following sentences on the internet.
{Alternatives to the TOEFL (ACT, SAT, IELTS)—Minimum Score Requirements An ACT English subscore of 21 An SAT Critical Reading score of 540 An IELTS (International English Language Testing System) total score of 6.5, with no subscore lower than 6.0}
I wonder why "an" is used in the sentence "An SAT Critical Reading score of 540". Shouldn't we say "A SAT Critical Reading score"?
Another example, in the following sentence: {The minimum English language requirement of this position is an TOEFL ibt score of 90.}
Shouldn't we say "a TOEFL ibt score" rather than "an TOEFL ibt score"?