iowa is the only state that consists entirely of vowels
A “W” isn’t a vowel, is it?
Prior to the 90’s high schools taught that W was a vowel, because it represents one in the -ow (Bow, low, etc) and -ew (Drew, slew) phoneme. However, this depends heavily on dialect, with some simply using the W to lengthen the vowel (“Droo” vs. “Drew-wuh”). Frankly, it was confusing as hell for kids who don’t pronounce W as a vowel to be taught that it was, and so textbooks quietly dropped it from vowel lists.