I dont understand people celebrating school closures. This won't be for two weeks. This will be for months. I would be amazed if kids are back by the end of Easter hols. The unions won't allow it. We are talking about an entire generation of kids effectively losing two years of education. It is utterly dire and there is absolutely nothing to be glad about.
It's not 2 years. Not even close.
Schools were open from September to March - 7 months
Schools have been open since September - 4 months (and if propper safety measures had been out in place there would have been far fewer bubbles isolating)
Open again from Easter (as per your GUESS) - Another 4 months.
That's 15 months of face to face learning in the 2 academic years you are talking about.
Is it ideal? No. But it's a pandemic. Ideal doesn't really come into it