You secretarial college did not go far enough to give you the information you needed for the post you made Pantglas. Perhaps you should, therefore, pause before you ridicule others with your scant knowledge of a subject. I am not commenting on you not knowing but on the attempt to ridicule.
Colleges taught for the jobs they thought their students would get. At some, it was the everyday Mr or Mrs as you might go into one of the few remaining of the typing pools but at others, they would learn how to address a Bishop, the Queen, etc., It doesn't make one group superior to the other but they may have more knowledge.
You might well be clever enough to get a degree but it was not seen as a necessity for the economy in the early seventies so the education was very different and fewer young people were offered the opportunity to go to university. Times change and, as with closures in a letter, people, customs and manners change with them. Don't put yourself down in regard to education, gaining knowledge is a lifelong thing some chose to do and some don't.
(I apologised if your name was wrongly spelt. I'm afraid I do not have to do these things deliberately. I hadn't seen it and it is just another offshoot of dyslexia. The software that keeps me on course doesn't work with names.)