But considering competition wouldn't Microbit be a better fit both for kids and even for students? Price is 10 GBP but you get also accelerometer, compass, 5x5 led array, 2x push buttons, 1x touch button, microphone, speaker, bluetooth le. You can power it with USB, AA battery pack or CR2032.
You can program in scratch, javascript, python and even c++. You can even change firmware to Zephyr RTOS if you want to do some low level stuff.
On top of that you have big ecosystem of extension boards or even robot kit. And tons of open source projects