The first batch of material you convert decides whether you trust the rest. Not because the conversion changes, but because you do. So the first batch should be the folder you're proudest of, not the drawer with the most paper in it.
Why the first batch sets the account
Everything converted from your material lands in an approval queue before a student sees it. You go through the first batch closely, item by item, with the source page beside each one, because you should. That's where you decide whether this is your material, organised, or something else.
If the first batch is your best folder, that pass is quick and reassuring. The questions are the ones you wrote, in the order you wrote them, marked against the key you supplied. You approve most of it in bulk, fix a few things you'd phrase differently, and from then on you spot-check. The approve before publish page shows the queue.
If the first batch is the biggest drawer, the pass is long and irritating. Half the pages were photocopies of photocopies, some sheets have no answer key, a few are things you stopped teaching in 2019, and the queue is full of items you're binning rather than approving. The conversion did what it was asked. The folder was the problem. But what you remember is the afternoon.
Trust built on the first folder carries to the second. Trust lost on the first folder has to be rebuilt page by page.
What "best" means
Not the hardest material or the most impressive. The material that meets three tests.
It's yours. Written by you or your tutors, so there's no rights question to work through on the first go. Textbook pages can come later, once the rights basis is recorded, and the material audit worksheet has a column for exactly that.
It has answer keys. A worksheet with a key converts into questions that mark themselves against your answers. A worksheet without one converts into questions with generated solutions that you have to review. Both work, but the first is faster to approve, and the first batch should be fast.
It's what you teach most. The Year 6 sets you run every Tuesday, the Year 9 maths program, the comprehension passages every English class starts with. Material that's in use is material with a class ready to use it, which means the first batch goes to students within the fortnight and you see something come back.
One subject at one year level
Pick one. Not one of each, and not a sample from across the centre.
A single subject at a single year level converts into something coherent: a program a class can be assigned, a topic order a tutor recognises, a report that can say what improved because there's a sequence to improve along. A sample from everywhere converts into a collection of unrelated sets that no one class can use, and the first thing students see is a fragment.
It also keeps the approval pass to one person's expertise. The owner who wrote the Year 6 maths program can approve the Year 6 maths program in an evening. The same owner approving Year 6 maths, Year 9 English and Year 11 chemistry has to keep changing hats, and the pass drags.
If you run both maths and English, pick the one where you have the keys and the classes lined up, and let the other be the second batch.
One class's material is a pilot
That's not a rule about the platform, it's a rule about a term.
One class, one term, one subject at one year level. A term's worth of that material is enough for a cohort of 15 to 40 students to work through a term's program, get marked, and have their parents receive a report every second Friday from week two. It's also small enough to approve carefully, teach from immediately, and judge honestly at the end. The pilot runs on exactly that shape, and the read-out at week ten tells you what happened, including what didn't work.
It also keeps the timing honest. One class's material converts in about five business days, so a folder sent in the last week of the holidays is a program students can be assigned in week one.
A first batch of the whole cabinet is a different thing. It takes longer to convert, longer to approve, and by the time it's published the term has moved on. The rest of the filing cabinet doesn't go anywhere. Setup converts everything you currently teach if you continue, and you approve it in the order you choose, once the first folder has earned your trust.
What to do with the biggest drawer
Nothing yet. Leave it where it is.
The audit worksheet is the place to write down what's in it: year level, subject, format, whether it's clean or needs a re-scan, and whether it's yours or licensed. That takes an afternoon and produces a list you can approve from in order, best folder first, once setup has converted the lot. It also tells you which subjects and year levels are yours outright, which is what the pilot should be drawn from.
Owners who do the audit often find the drawer is smaller than it looked, because a lot of it was duplicates and superseded versions. The best folder was always the same fourteen worksheets.
This week
Open the shared drive or the filing cabinet and find the folder that meets the three tests: yours, has keys, in use. One subject at one year level. If it's a term's worth, that's the pilot. If it's more, pick the term's worth.
Then send three worksheets from it through convert my worksheets and see what comes back with your branding on it, before you decide anything about the rest.