Plenty of scope for a 10/22. NXS is great glass. We love NF. Everything they make is top notch. Good thing, too, is that your son/daughter cannot hurt it. We sell a lot of NF. We also sell Vortex and Steiner in that market.
The next comparable would be a PST or PST Gen2 or Steiner T5Xi. The T4Xi is good, but either too much magnification or too little, so not a fit. PST is a good choice, and easier on the budget for short range like a .22 cal., but you will not get the rock solid resiliency that will be beneficial for a youth shooter who will inevitable let his or her rifle fall over. Nothing to worry about with NXS.
Let me know if I can help you. We sell mostly ATACR and NX8, and NF is giving me grief about being more well rounded, so we need to boost our SHV and NXS numbers.
We are still behind the rings and mounts. (off topic) NF is good, but some of the mounts have 20 MOA cant, and that doesnt work for everyone. We are picky in our rings and mounts. Lots of Geissele; Some NF; Some Badger; Spuhr is big for us, and a few odds and ends. Less and less LaRue, ADM and Bobro. Hit upon ZeroDelta. I like what they do. Anyway...