Not sure how to form the possessive of kids? Not sure if the apostrophe goes before or after the S? Do what the writer for Yahoo! Style did and hedge your bets: Put the apostrophe before and after it:
I guess elementary schools don’t teach the same things nowadays that they did when I was a youngster. Of course, that was many, many decades ago, but I thought there were some subjects that were eternal. Like how to form the plural of nouns. Judging from this excerpt from Yahoo! Style, schools are neglecting that bit of knowledge — or the writer was playing hooky that day:
The possessive plural of lady is ladies’. It follows a simple rule: Form the plural of the noun and if it ends in S, add an apostrophe. So, it’s idiots’ and dummies’. If the plural doesn’t end in S, add an apostrophe and S: So women’s, children’s, and alumni’s are correct.
Let’s run through this one more time for the folks at Yahoo! Style: If you’re unsure of the spelling of a word, consult a dictionary. If a word looks funny (like, oh, say, maybe throughs), consult a dictionary:
If the writer had done that, she might have seen that run-throughs is a noun requiring a hyphen. Just in case incidents like this happen to arise, editors can cut them out and replace them with the correct word. Editors can also be sure pronouns (like them, not it) match their antecedents (which in this case is incidents).
Hillary Clinton is the Democratic nominee for the presidency, but you wouldn’t know it if you read this on Yahoo! Style:
As a common noun, democratic refers to a democracy or people in general. But if you’re referring to the political party in the U.S., it’s Democratic, with a big D.
Speaking of a big D, that’s the grade I’d give this writer for coming up with Clintons’s. I’d be appalled if I hadn’t seen that error so often on Yahoo!. It seems Yahoo! writers (and their editors, if they have them) don’t know that the plural of Clinton is Clintons and the possessive of Clintons is Clintons‘.
If well-educated editors overlooked this error on Yahoo! Style, their friends’ and families’ faces would fall to the floor:
I’m assuming that the friends and families (there’s probably more than one family involved) have separated faces, so there needs to be an apostrophe after the S on both friends’ and families’.