Thanks for your post, Alan. I share your concerns. Although I am leading Computing, I am by no means an expert and purely a teacher who wants to improve how we use technology. Fortunately, my head and governors are supportive hence me posting on here first before a heavy investment.
The coding program that we follow is Web based. We also use TimesTables Rockstars and EducationCity which are the same. The tablets are likely to be for these purposes on the whole. However, cameras, recording etc. may be required depending on the teachers' topics. They may also be used for interventions such as translation for EAL pupils.
After speaking to secondary teachers, the children will be learning how to use Word, PowerPoint etc. as well as typing and a few other basic skills.
Teaching staff use Office365 for emails but their classroom laptops are Windows 7.
Knowing our staff, I think the set up needs to be easily managed as we only have a technician 1.5 days a week and have 600+ pupils. Sadly, our ICT suite was removed last year without any infrastructure in place. I do have the option of visiting schools and will most certainly have yearly staff training on whatever products that we invest in.