Data Table

iPads over the past few years.
	iPad Pro 2019	iPad 2019	iPad Pro 2020	iPad 2020	iPad Pro 2021	iPad 2021
Single Camera on Rear	yes	yes	no	yes	no	yes
Dual Camera on Rear	no	no	yes	no	yes	no
ProMotion Display (120Hz)	yes	no	yes	no	yes	no
Normal Display (60Hz)	no	yes	no	yes	no	yes
Apple Pencil Support	All could use some kind of Apple Pencil
Processor in Device	A12X	A10	A12Y	A12	M1	A13

Conclusions from Data

The iPad Pros will have dual cameras from here on out.
The 2021 iPad Pros are basicly as powerful as the new M1 Macs.
All of these iPads would be great for school use do to the ability to use an Apple Pencil.