I think it was a pretty good discussion. Interesting to see how different schools and teachers operate, and how parenting styles come into play. I think some posts do cross over from "this was my experience" into a "judgmental tone" of "this is how you should do it", and sure, this can seem offensive when it's our kids we're talking about, but I think it's probably just posting style more than anything (and if not, who really cares?

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We have two freshmen in college. Our school system used an online system since middle school. We did have a couple of instances of wrong grades being entered and kids either noticed it themselves (especially DD) or DH (who followed online) noticed it and kids addressed it with teachers. I don't recall us ever having to get involved, at least not in the later HS grades. (In MS and early HS DS needed some nudging.) We did meet teachers at Open House at the beginning of the year and developed a "plan" then of dealing with any issues, which was primarily to say how to contact them, when they were available for extra help, etc. There were a handful of times where I wrote to teachers about something that wasn't resolved by our kids, or that I wanted teacher to know about, and they were appreciative of getting that feedback.
I don't think most kids automatically wake up and know how to handle things. It's a learning process, and the time to learn how to deal with issues is in middle and high school, before they get to college (although lots of learning still takes place in college). So I think it's ok to help guide them, if need be. Some kids don't need it; others do. It's interesting to me how, here in this thread, quite a few posters justified if their kid needed extra help that it was because of a "learning disability" or something similar. What about those kids for whom it's just a personality quirk or maybe anxiety or something? Are those kids just left to flounder? (And I also agree with the ONE poster who said that waiting too long could be a problem.) At any rate, I think it's not a black and white issue of whether to either let your kid absolutely handle everything themselves, or to do everything for them, etc. There can be middle ground where kids take the lead with parents as back up teaching them how to handle things.
And just to address the one comment I saw about grades in college after age 18. Yes, legal issues there about access. But most parents I know with kids in college - especially freshmen, which is where we are right now too - either have their kid add them on as ok to see grades, or have their kid give them their password in order to eyeball grades from time to time. Going to college is a huge investment and they want to see that their kids stay on track. At one of the college Open Houses we attended last year the administrator speaking made a big point of students getting help BEFORE it's too late in the semester; before they drop out, etc. Not all kids do this. They don't see a way out and don't take advantage of services that may be offered - why, I'm not sure, but maybe it's that they either don't know about them or are too embarrassed to go or something. This is where a parent may step in to help guide. Nobody else may be aware of the problem on a bigger scale. (DD and DS are both fortunate to be in college programs where there are mentors who help them stay on course.) I'm sure there will be people here that disagree with that, and say let them flunk out, they have to learn, and I don't completely disagree. But I know when I was in college I had no help or guidance and made a lot of mistakes. Did I learn, sure I did. But it also cost me a great deal of time and money, way more than it should have or that I could afford at the time. (And it goes without saying that today, with costs as they are, it's even harder to make those types of mistakes.) I am not completely opposed to my kids making mistakes, but I think it's also important to help them see that there are things that can be done if there are problems; that there are lots of resources and people who want to help them succeed at college. YMMV