I think it depends on whether or not you'd be embarrassed by him repeating the truth at school. I'd tell my kid that his teacher meant that families should participate if they have extra cans of food or extra money to buy some... and we don't have those things right now. I'd probably call the teacher and let him know about the situation so that my child wasn't questioned further about his inability to participate in the food and toy drives.
But I know a lot of people would be ashamed to let others know of their financial state and I'm a little unusual in my frankness about it... so that approach may not work for you.
But I know a lot of people would be ashamed to let others know of their financial state and I'm a little unusual in my frankness about it... so that approach may not work for you.