Computing can be very abstract - ultimately it is a branch of mathematics - and the theoretical stuff is, if anything, probably too advanced to easily teach to 16-year-olds.

计算机课可以很抽象——实质上它是数学的一个分支——而且理论的东西，如果有的话，也可能太深奥以致没法轻松地教一个16岁的孩子。

youdao

To teach cleaners and nightwatchmen advanced mathematics (such as adding up without a calculator) seemed pretty wasteful, and apt to breed discontent.

ECONOMIST: Education and the wealth of nations