When it comes to the standard of 'modern day' spelling we have only to look at TBN as an example. I'm referring to the auto-correct/dictionary function... we type merrily away and then go to all of the red-underlined words, correcting as we go OR adding them to our personal dictionary.
I've had to adapt the TBN dictionary for all of the 'American English' spellings & idiosyncrasies, plus add in all of my 'Aussie-isms'. I also have an Oxford dictionary and thesaurus sitting here on my desk, ready to go.
Here's another example of the standards coming out of modern education; I required a 14yo to fill out a form and then sign it... the filling out went fine but she looked quizzical when it came to signing her name. The result was written in block letters.
I'm soon expecting them to simply make an "X", with my following it with "his/her mark."