Assess students' ability to create a sustainable 200 m² school garden that captures and retains runoff from a 20 mm rain event, supports at least five native pollinator species, and minimizes maintenance. Require a labeled site layout with dimensions, a native plant list with low‑maintenance traits, water‑retention calculations (show volume captured, infiltration/storage assumptions and unit conversions), a simple irrigation/overflow strategy, a maintenance schedule with effort estimates, and a monitoring plan with measurable indicators and data collection methods appropriate for grades 6–8.