Don't be upset. It's not the end of the world . We can still see him at recess (like what mdm rubi said) or any other time, If hot any questions to ask him(regarding history) i think he will be glad to teach us - still.( Since we are once his student right?)
He won't be our form teacher nor history teacher. Most likely we will get back out teachers next year, So katherine, if u want $$, just take up history lah. Simple as that . He 's not dying today, what's there to upset about?