Are you guys ok with it? What about British teachers and students (pupils!) generally? In Australia it used to be technically acceptable to use either spelling (as long as you were consistent), but convention strongly favours British spelling. *** is a bigger market for me, and I generally make resources for 12 years old and up. I use American spelling by default, and American words (elementary school) and school terms (middle school, grade 6, etc). I still seem to sell on TES, but I wonder if people find American English problematic, or just explain to students that it's "American spelling"? I'd like your advice please. Do you think it would be worth it to me to face the tedium of translating all my resources into British English???