What a nonsense - Poland actually had full lockdown and did close schools during the pandemic (the English word is not pandemia but pandemic BTW).
From Wikipedia:
On 10–12 March 2020 lockdown-type control measures were implemented, closing schools and university classes, offices, and cancelling mass events, and were strengthened on 25 March, limiting non-family gatherings to two people and religious gatherings to six and forbidding non-essential travel
From Wikipedia:
On 10–12 March 2020 lockdown-type control measures were implemented, closing schools and university classes, offices, and cancelling mass events, and were strengthened on 25 March, limiting non-family gatherings to two people and religious gatherings to six and forbidding non-essential travel