Classroom Robotics Safety Spectrum: Explained

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The Classroom Robotics Safety Spectrum

The LADDER OF RISK

Not every combat robot carries the same risk. This reference breaks down what actually drives risk, competition type, materials, weight class, and weapon system, and what containment each level calls for. It’s the companion chart to our full guide, Building a Safe Robotics Program.

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Understanding The Classroom Robotics Safety Spectrum

Schools have been managing safety for as long as there have been schools. Every day, educators make thoughtful decisions about balancing educational value with appropriate safeguards—from deciding whether crayons are suitable for preschoolers to preparing a sixteen-year-old to safely drive two tons of metal down the highway.

Robotics is no different.

The challenge isn’t finding the “safest” robot. It’s choosing the robot that best aligns with your educational goals, your students, your facilities, your budget, and your school’s safety needs.

We’ve designed a safety “Ladder” to help you visualize the range of competitive robotics programs, understand the relative capabilities of each, and identify the appropriate safety measures that will allow your students to participate safely and confidently.

The Ladder of Risk

Image	Bot Type	Weight Class	Weapon Type	Rung	Mitigations	Infrastructure
Not Dangerous
	Line Follower	N/A	None	Not Dangerous	Normal supervisionNo arena	(non-arena)
	Maze Solver	N/A	None	Not Dangerous	Normal supervisionNo arena	(non-arena)
	Sumo Bot	N/A	None	Not Dangerous	Normal supervisionLow curb (6″)	Class A
	Combat Robot	Fairyweight	Wedge/Pusher	Not Dangerous	Normal supervisionLow curb (6″)	Class A
	Combat Robot	Plastic Ant	Wedge/Pusher	Not Dangerous	Normal supervisionLow curb (6″)	Class A
	Combat Robot	Antweight	Wedge/Pusher	Not Dangerous	Normal supervisionLow curb (6″)	Class A
Low Risk
	Combat Robot	Fairyweight	Lifter	Low Risk	Normal supervisionArena walls	Class B
	Combat Robot	Fairyweight	Grabber	Low Risk	Normal supervisionArena walls	Class B
	Combat Robot	Plastic Ant	Lifter	Low Risk	Normal supervisionArena walls	Class B
	Combat Robot	Antweight	Lifter	Low Risk	Normal supervisionArena walls	Class B
	Combat Robot	Beetleweight	Wedge/Pusher	Low Risk	Normal supervisionArena walls	Class B
Moderate Risk
	Combat Robot	Fairyweight	Kinetic Weapon	Moderate Risk	Adult supervisionArena wallsArena ceilingTest box	Class C
	Combat Robot	Plastic Ant	Kinetic Weapon	Moderate Risk	Adult supervisionArena wallsArena ceilingTest box	Class C
	Combat Robot	Antweight	Kinetic Weapon	Moderate Risk	Adult supervisionArena wallsArena ceilingTest box	Class C
	Combat Robot	Beetleweight	Lifter	Moderate Risk	Adult supervisionArena wallsArena ceilingTest box	Class C
High Risk
	Combat Robot	Beetleweight	Kinetic Weapon (Spinner/Beater/Flipper)	High Risk	Adult supervisionFull arenaTest box	Class D

Weight class alone doesn’t determine risk. A 3-pound Beetleweight has roughly nine times the mass, and correspondingly more potential energy, than a 150-gram Fairyweight, but the weapon it carries matters just as much. A Beetleweight pusher and a Beetleweight spinner sit on very different rungs.

Arena & Containment Classes

Every “Infrastructure” entry above refers to one of the containment classes below. These describe physical barrier requirements, not weight class, the same class can apply to different weight classes depending on what the robot actually does.

Class	Name	Description	Typical Use
(non-arena)	Special-Purpose Course	Not a containment structure, a track or maze for non-contact bots	Line followers, maze solvers
Class A	Open Platform	No real sides, a low curb (~6″) at most to keep a robot from driving off the edge, not intended to contain impacts	Sumo, pusherbot rings, low-force wedges
Class B	Basic Barrier	Simple box or platform with light sides, foamboard/plywood-level construction (Turnabot-style)	Very low-force robots, demonstration/testing
Class C	Standard Containment	1-2 layers of lexan (1/4″+), kickplates, aluminum frame, walls 2ft+, ceiling	Ants, lifters, small spinners, and any weight class needing this level
Class D	Heavy Containment	3/16″+ lexan or 2 layers 1/4″, kickplates, reinforced frame, matching-gauge ceiling (lexan or wood)	Beetles, spinners, beaters, and any weight class needing this level
Test Box	Weapon Test Enclosure	A small, fully enclosed box (not a full arena) used to safely spin up, test, or run in a weapon before or between matches, required any time a kinetic weapon is powered on outside of an active, supervised match	Any robot with a kinetic weapon, at any weight class

Note: There’s no universal industry-wide arena classification standard, these classes reflect common, real-world practice, not a formal spec from a governing body.

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Have questions about setting up a safe, age-appropriate robotics program at your school? We’re happy to help.

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ABOUT THIS GUIDE

This guide explains the multiple types of competitive robots and ranks them in an easy-to-understand table of safety and mitigations designed for the teacher starting a program. It’s written for teachers and program leaders, not competitors.

SECTIONS

Understanding the Safety Spectrum
The Ladder of RIsk

Not Dangerous
Low Risk
Moderate Risk
High Risk

Arena and Containment Classes

Special Purpose Arenas
Class A: Open Platform
Class B: Basic Barrier
Class C: Standard Containment
Class D: Heavy Containment
Test Box: Weapon Test Enclosure

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GUIDE

Understanding The Classroom Robotics Safety Spectrum

The Ladder of Risk

Arena & Containment Classes

Ready to Get Started?

ABOUT THIS GUIDE

SECTIONS