I live in in Denmark and my stepdaughters (5 & 9) went back yesterday. My baby girl (just 1) starts day care on Monday. Their mum & I both work full time (luckily both able to work from home.)
I'm amazed at how far the school, kindergarten and day care have gone to try and make it as safe as possible.
I can't list everything, but:
Kids are sent home at the first sign of illness (common corona symptom or not.)
All toys that can't be easy washed twice a day have been stored away. All games that involve passing things around (cards etc.) have been stored away.
The classes at the school have all been split in two to maintain distancing. Breaks outside are staggered throughout the day to keep numbers as low as possible.
Additional staff have been hired at the day care and kindergarten, where the kids are also sorted into smaller groups. This is both to be with the kids and to do constant rounds cleaning surfaces etc.
All hands are washed every 90 mins at the least.
All this is with the understanding that the kids cannot realistically maintain distance from each other at all times.
Denmark locked down very early though - the numbers in hospital have fallen steadily for the last two weeks and at the worst point we weren't using even 10% of the respirators available.
It was hard with the baby, but before the lock down, when I was on paternity leave, the highlight of her day would be when I took her to the local mall or anywhere else with lots of people. She loved watching people, she got so happy when they smiled at her or waved. I'm as concerned about the lack of socialisation she's experiencing as I am about the virus, in all honesty.
I do trust the government here, they seem to have gotten it right so far.