What monitor arm features work well in a school computer lab?

School computer labs need: arms that hold position under frequent student adjustments (not too loose), tamper-resistant hardware (students will try to disassemble them — avoid tool-free removable VESA heads), cleanable powder-coated steel construction, simple design that teachers and IT staff can quickly adjust, and budget-appropriate pricing for 20–40 unit deployments. Grommet mounting is preferred over clamp in labs where desk surface integrity must be preserved. Arms shouldn't be gas-spring if they'll constantly be over-adjusted — mechanical tension arms with screwdriver-adjustable tension hold position reliably. FindOfficeFurniture.com can price volume lab orders — 888-719-4960.