Scrum checklist - Henrik Kniberg's blog
"The main target group for this checklist are teams that are relatively new to Scrum and likely to get many things wrong.
Each item is tagged by priority. I consider the priority 1 items to be pretty fundamental, I'd hesitate to even call it Scrum if a company hasn't implemented all those items (or at least has good reasons not to).
When helping companies implement Scrum I normally start by ensuring that all priority 1 items on the checklist are implemented (or intentionally skipped) before even considering priority 2 and priority 3."
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