Fair enough. You can mark in a general AI model. This is an honest look at what that actually costs you in time and student-data risk, where general AI genuinely wins, and a free prompt pack to keep either way. No sign-up.
Free prompt pack · no sign-up · Open Period is independent and not affiliated with any AI provider.
Marking a class set against your rubric: who does the work in a general AI model, and who does it in Open Period.
A normal chat doesn't hold your rubric. You re-paste it each session, or build and maintain a custom assistant to keep it.
Your rubric, year level and marking standards are stored and applied to every mark. No re-pasting.
It doesn't know your class. You re-describe the year level, prior performance and adjustments whenever you want them considered.
Set your class context once; it's applied across feedback, marking and emails.
Removing student names and managing data-use settings is on you. Nothing strips identifiers for you before the text is sent.
Names and identifiers are stripped before the text reaches the AI (in-app, with a server-side backstop), and the removal count is shown. (One exception: photographed handwriting, which we disclose in our privacy pack.)
You specify the format every time, then read, copy and reformat the result by hand.
Comes back as strengths, in-line annotations and next steps, ready to review and use.
Repeat the paste-prompt-copy loop for each student (see the count below).
Designed to run through a class set from one setup.
Results shift with how you phrase the prompt each time, which can make marks harder to compare.
The same structured standards every time, so drafts stay comparable across the set.
Free, or a paid plan. Honestly, in dollars, this is general AI's win.
A general AI model is usually cheaper in dollars, and that's its win. Open Period's founding access is free when we open, no card. The trade you're weighing is dollars vs. your time and student-data safety.
Not once, but for each student. This is the cost that never shows up as a bill.
We mean it about being useful. If a general AI model is your tool, here are three NSW-teacher prompts that work in any general AI model. Copy them, fill the brackets, and you'll see the manual steps for yourself.
An honest comparison has to include this part.
Free or low-cost. If budget is the only question, general AI wins it outright.
It'll do anything: emails, lesson ideas, a recipe, code. A purpose-built marking tool won't.
For a quick, single job, opening a chat is faster than any setup.
If you like crafting prompts and steering the model yourself, it's a brilliant instrument.
"I built Open Period because I watched the maths up close: the pile that never shrinks, the evenings that do, and the feedback cut first every time. I didn't want a tool that marked for teachers. I wanted one that gave the boring half back and left the judgement where it belongs. With you." Scott, the maker · English teacher in training, ACU
Leave your email and be first in when Open Period opens. Free founding access, so you can compare them on your own pile.
We'll email you the moment we open the doors. No card, no spam.
The founding cohort is small. Bring your staffroom in with you and share with 3 English teachers who'd want this too.