My experience both in US high school and college English classes was that 'okey/okay' is taught as a proper American English word, universally accepted as synon

My experience both in US high school and college English classes was that 'okey/okay' is taught as a proper American English word, universally accepted as synonymous with 'alright', 'OK' being a contraction/slang. Interesting to read this may not be the case.