In accordance with this post and the responses there, I suggest:

• Delete self-learning; retag questions actually about the process of self-learning as learning (this already has positive support on the other thread).

[other suggestion moved to a separate answer]

In accordance with this post and the responses there, I suggest:

• Delete self-learning; retag questions actually about the process of self-learning as learning (this already has positive support on the other thread).

[other suggestion moved to a separate answer]

In accordance with this post and the responses there, I suggest:

• Delete self-learning; retag questions actually about the process of self-learning as learning (this already has positive support on the other thread).

• Make teaching a synonym of education. This is not discussed as much on the other thread, but the tag description for teaching in fact describes math education instead of describing teaching in particular, so it looks like the two tags are being used interchangeably. I suggest education be the parent tag since it is used more frequently.

In the future, education can be for questions about math education, and learning for questions that are specifically about the process of learning.

(In some broad sense learning is a special case of education but I think the distinction between these two is useful.)

In accordance with this post and the responses there, I suggest:

• Delete self-learning; retag questions actually about the process of self-learning as learning (this already has positive support on the other thread).

[other suggestion moved to a separate answer]