At Harmony School, a private school in the Columbia suburb of Forest Acres, children learn in a couple of portable classrooms that were pressed into service after last October’s historic flood. The move was required because the flood rendered the school’s largest building, its preschool, unusable. Just 2 to 4 inches from the overflow of adjacent Gills Creek was all it took to cause $400,000 worth of damage. Director Debbie Holmes and teacher Jennifer Mancke talk about the event and the school’s efforts to raise money for its repair. Even the school’s students are pitching in.