If the over hang (part of section A) extended the length of the table and then both lower sections and upper sections could be enclosed to hide wiring and minimize fluorescent light into classroom - this would work.
How to Build A Rain Barrel. Every gardener and garden needs a rain barrel. By harvesting rainwater you can cut your bills and water your garden for free. You'll be surprised at how easy it is to build your own rain barrels, and this simple design is perfect for any outdoor space. You can connect your hose straight to it, or fill up a watering can.
Gathering Your Hygiene Preps - Another Easy Prepping Action You Can Take