Learn English – Is “class room” instead of “classroom” considered a mistake

word-usage

When talking about a classroom in school, college or university, is writing class room instead of classroom as a compound word considered a mistake?

I am asking it because one of my classmates who isn't a native English speaker wrote me a message with this form of class room and I'd like to know if it's a mistake, then I can tell him since he asked me in the past to tell him if I notice a mistake in his English language.

Best Answer

The word classroom exists and so you should use it, but whether "class room" is enough of a mistake to raise is doubtful. There are quite a few words that were spelled with a space 100 years ago, but are now written without a space. For example "to day" used to be written with a space.

So if this is the only mistake you can mention it, but it is really picky, and you are probably better letting this one pass.