|Nah, how you spell is more important|
Yeah, but did he tell them to master their spelling first?
One of the ways in which American English and British English differ is in spelling. In British usage, some words of French, Latin or Greek origin end with a consonant followed by -re. Most of these words have the ending -er in the United States. The difference is most common for words ending -bre or -tre: British spellings calibre, centre, fibre, litre, lustre, metre, reconnoitre, sabre, saltpetre, sombre, spectre and theatre, all have -er in American spelling.
American English has kept the Anglo-French spelling for defense and offense, which are usually defence and offence in British English; similarly there are the American pretense and British pretence; but derivatives such as defensive, offensive, and pretension are always thus spelled in both systems.
Can you tell if the language experts at www.goodenglish.org.sg are using British or American English?