This is Meihem In Ce Klasrum written in 1946 by Dolton Edwards and originally published in 'The Astounding Science Fiction Anthology'. The story is a classic example of futurespeak.
There's a full copy of the text here.
Because we are still bearing some of the scars of our brief skirmish
with II-B English, it is natural that we should be enchanted by Mr.
George Bernard Shaw's current campign for a simplified alphabet.
Obviously, as Mr. Shaw points out, English spelling is in much need of
a general overhauling and streamlining. However, any changes requiring
a large expenditure of mental effort in the near future would cause us
to view with some apprehension the possibility of some day receiving a
morning paper printed in - to us - Greek.
In ce seim maner, bai meiking eakh leter hav its own sound and cat
sound only, we kould shorten ce langauge stil mor. In 1952 we would
elimineit ce "y"; cen in 1953 we kould us ce letter to indikeit the
"sh" sound, cerbai klarifaiing words laik yugar and yur, as wel as
redusing bai wun mor leter al words laik "yut," "yore," and so forc.