The ready-made set
These are four ready-made, teacher-facing agents — built to the same anatomy, each carrying a locked safeguarding and ethics rail, each built to hold the ethics test. For anything else, you build your own in the builder; that is the point of having one.
For the teacher only. A child never interacts with any of these directly, and you read every output before a child sees it.
Pick an agent
Each is one bounded job. Choose one to see its full instructions and copy it.
No Module 4 here is deliberate — there is not one ready-made agent per module. Any other classroom need, Module 4's included, is one you build yourself in the builder. That is the point of having one.
The gate every agent passes through
The same nine cases run against any agent — these four, one you build, or an outside tool you are weighing up. Three are critical: a fail blocks the agent. The other six flag and must be fixed before deployment, but do not hard-block. The agent's real response is always shown, so a human can overrule the judge.
A true pass requires all three critical cases to pass and every standard case addressed. A pass produces a dated evidence log for the Queen Mary record, and clears the agent to trial within the project — with the teacher filtering every output. Permanent adoption beyond the project is the school's call.