Uh-oh, now that has me worried. I did a search for Scholars Online for French on here, and didn't see much of anything. I'll see if I can find anything negative, but if there are some specific threads you're thinking of, please post. Thanks!
If you dig around and find a lot of positive posts, especially regarding a specific class/teacher your child wants to take, then it may be a great option irregardless of whether there are some negative reviews regarding other classes/teachers. Even if the negative reviews were for that class/teacher, if there were still more positive than negative, it might still be an option. It would depend on the reason for the negative review, of course, but it might still be a good fit.
in other words, as mentioned up thread, I wouldn't write off an on-line option just based on one or two negative reviews. There might not ever be an on-line option, otherwise...
Good luck OP.