Back to school starts with a refresher
Two months after the initial workshop, teachers from the same three module groups came back before the school year starts. A repo refresher, then every teacher wrote a personal Copilot instruction or prompt, and one rule went into every single one of them.

The June training ended on a promise: a short refresher before the new year, so nobody walks into September cold. On 24 August, teachers came back to find out whether the promise, and the summer homework, had held.
Starting with Git, again
The first stretch of the morning was not new material at all: module groups cloned their repositories and worked back through the exercises from June. It is unglamorous, and deliberate. From day one of the new term this is the actual environment teachers and their students will share, so before the year starts it had to be polished.

Two words every teacher had to learn
The second half built something new: a personal AI tool each teacher keeps for the rest of the school year. It required learning the difference between an instruction and a prompt, which is really the difference between a standing rule and a tool you choose to pick up.
Most of the time went into a group brainstorm: what would actually be useful, day to day. Something to catch language that has no place in a student repository. Something to check whether edge cases were handled. Something to flag when two students' solutions look suspiciously alike. Something to keep every review in Polish. Ideas went in every direction, but one line made it into almost every version teachers wrote, whichever form it took: "Never issue a grade. Only point out what to check."
Ownership, assigned before September
September starts the pilot programme, and a lot is going to happen fast. That is why Tenvalleys and the teachers set up a shared communication channel for the year on the spot: to stay present through the change and keep helping as things come up, adjusting to what students and teachers actually need.

Five hours did not need to rebuild anything. June had already set the workflow, the vocabulary and the principle. This session only had to prove teachers could carry them forward on their own, without Tenvalleys in the room.
The first cohort of "Programista AI" begins within days. Every module now has a named contact and a shared place for the tools teachers build for themselves. The rule underneath all of it stays simple: the judgement stays with the teacher. AI just gives them superpowers.