There are arguments that supermarket workers are in a more risky environment than teachers and there could be equal arguments to support other jobs being vaccinated as the next priority.
Let’s not forget any teachers in at risk categories are being vaccinated as part of the current approach...
The Gov will deliberately ‘leak’ snippets to the media weeks in advance of the announcement as a means of testing reaction and refining their thinking. If the public react badly they can then just say it’s the papers printing nonsense whilst they update their plans.