Down here in Peru we've been on virtual classes since March last year. We have to be thankful that we're in a situation where we can work from home and provide the resources necessary for the on-line learning, and the school the kids are in is decent - a huge % of the population here aren't in that position and I think there's going to be a big impact on future generations.
With all that said, we've been struggling, especially as we live in an apartment, not a house (outside space). As mentioned a few posts further up, it's not even necessarily the impact on the education - it's the lack of social interaction. We've got 2 kids - 8 yrs daughter and almost-5 son. The 8yr old has been struggling with her emotions, and we've had a lot of un-prompted crying, whilst the almost-5 yr old has been increasingly boisterous and showing some ADD type behaviour. He's also been coming to our bed every-single-night since this all started. The first half of last year we had issues getting a decent solution for our daughter - she's deaf and has cochlear implants, which complicates the online-learning process, especially being bilingual. We finally settled on a high end bluetooth speaker, having tried a direct bluetooth connection and a straight direct cabled option into the processors, both of which had issues (class of kids suddenly start screaming and she would be crying in discomfort as I scrambled to disconnect the cables). Our son is VERY capable and quick to learn and has led to him getting bored in the classes, the teachers have said they'd like to advance him a year, but the education ministry won't permit it. He has been known to correct the teachers' English...
Both kids have become very interested in playing with the tablets/PC, and we're having to limit it. What we've found has helped the most has been routine on school days (early to bed, bedtime story, no TV etc), and trying to get out for a walk around the block once a day (not always easy with work). We've also just implemented a weekly allowance IF they complete certain tasks (help cleaning, read a book, etc) which they both like.
All that said, I'm struggling - there are times I want to just escape and shut myself in a room or similar. The bulk of this has fallen on me, as SWMBO is a Doc and so has a mix of work from home and in the hospital and she's got all the stress of seeing the damage done by COVID up close, I'm the only one who is here ALL the time with kids (and I work at the dining table with the kids next to me) and I try to not to dump this lot on her too. The lack of sleep (son coming in every night), work stress (I've ended with so much stuff at work, and several people trying to make problems for me), school stress (some days my daughter is a mathematical genius, other days can't do 2 + 2), lack of people to talk to, etc etc all adds up to making it difficult to be patient with the kids. Some days I know I'm being grumpy, but...
The days I can find time to exercise that helps, and I'm also trying to take 30 mins to an hour each weekend to get on with some model-making (0-16.5 narrow gauge, almost 0n30), but it's not much.