My two kids “officially” did the minimum service required by their high school - about 40 hours total over four years. But there were other times when they’d pitch in with things, where no one was counting. Those were the things they did most enthusiastically.
I used to debate this with the principal of their school, arguing that “mandatory volunteer work” was an oxymoron, and counterproductive. The school disagreed. Nothing I’ve seen since persuades me that they’re right.