You might have missed it, but it doesn’t look like the BBC story you showed indicated which side had shelled the school. Simply that, as part of some Moscow-backed fighting in an urban area, one side or another dropped shells on a school near where the separatists were besieging the airport.

Also, that source is hilarious lol.

MOSCOW, March 31 - RIA Novosti. After the sentencing of Marine Le Pen, the leader of the right-wing National Unification party faction in the French parliament, Dmitry Medvedev, Deputy Chairman of the Russian Security Council, suggested that the French think about establishing a “Sixth Republic” or recall the time when tsarist Russia “brought democracy to France on bayonets.”

Commenting on Le Pen’s verdict, the deputy head of the Russian Security Council noted on his page on the VKontakte social network that “by adopting the path of simple, odious politicking, the Fifth French Republic has completely discredited itself.”

“The people of this country, apparently, should think about establishing a Sixth Republic,” Medvedev wrote, ironically noting that he was “not hinting at anything.”

What is this source? I’m not real sold by their repost of what they found on Telegram. What were they saying around the time of Feburary 2022? I tried to look in the Wayback machine but I couldn’t find anything, and their archives aren’t exactly easy to navigate. They appear to post one new story every minute, so it’s kind of hard to trace back all that far just by simple means.