Do you know about the IPA, the International Phonetic Alphabet? It is an alphabet used to transcribe the phonetics of words, in order for there to be common letters and symbols to write down the pronunciation of words, usually for languages whose words are read/pronounced differently than they are spelled/written, i.e. languages that have reading/pronunciation rules.
I remember getting introduced to this alphabet very early in childhood when I started learning English with my aunt (she is an English teacher). She introduced me to it gradually and I think I remember it by heart now. When I was holding private lessons of English and French myself, I remember using it and explaining it to my students. I now wonder though, since it is international, did your teachers use it with you while studying other languages? Like for Korean for example, or Japanese, or all others that you are/have been studying? Is it the same alphabet used there to transcribe the phonetics of words for westerners?
This tutorial/lesson is a great explanation of the alphabet, in case you don't know what it is, or have forgotten, like myself:
My aunt and I, we used to use different brackets though for indicating the phonetic transcription ( {} ), while the common ones are ( // ) according to this video. I don't think that is very relevant, but...
So, do you know about it? Have you been introduced to it already? Do you find it helpful? Teachers need to know it, it helps students, and almost all online dictionaries use it.
Cheers!