Proof of this finding is two fold. Firstly there is NO other commonly used, non-generic, English word which starts with 'sch' pronounced with the 'sh' sound. Secondly, any 'sh' word in the English language starts with those same two letters: 'sh' - for those reading this who pronounce 'schedule' 'sKedyool' I had to repeat the obvious!
shoe, shot, shit, should, sheik, shook, shoot, shew, shrew, shrewed, shell, she, shore, shone, shop, shall, sheep, sheen +++
Examples of 'sch' words pronounced with the 'sh' sound: ?
Examples of 'sch' words pronounced with the 'sk' sound:
school, schizophrenic, scheme, schematic, scholar, scholastic, schedule +++
Indeed there are words with the 'sh' sound which start with 'sch' but are derivitives or generic words from another language. Examples are: schnapps (Dutch), Schneider (German name), schnitzel (European cut of meat.)
In closing - to best exemplify this - try using the word 'schizophrenic' in a sentence using the 'sh' sound.
Max: *with a thick English accent* "I heard that Arthur's son does not attend Eton because he is a 'shitsophrenic.'
Scott: "Indeed he does not attend Eton; but not because he is a 'skitsophrenic' but because he doesn't want to be around assholes like you who pronounce 'skedyool' 'shedyool!"