Sarah Fiacco enjoys working as a lunch lady in the cafeteria of her kids' school.Courtesy of Sarah Fiacco.Substitute teacher Sarah Fiacco, turned down a permanent role because she hated disciplining the kids.She was nervous about taking a job in the school cafeteria instead, as it seemed like a step-down.When a student wrote her a cute thank you note for lunch, the mom knew she'd made the right choice.This as-told-to essay is based on a conversation with Sarah Fiacco.