Ruger American Compact rimfire. Mine will put 10 shots in a one inch group at fifty yards with the ammo it likes. Simple little 4 power Leupold scope is money.
I actually bought a standard and a compact for teaching my grand kids.
The compact shoots like a target rifle.
Luck of the draw with Rugers.
Use the single round magazine to get them started .
Nice part is the Ruger rotary magazine that works and is cheap.
Have your choice of single,10,15 or 25 shot versions.
And by changing the stock pieces they can grow into it.