In some circumstances, you may also have to prove your competence in the English language.

The school had proven its competence; its standards have reached a point higher than most schools in the area.

Achieving goals is very important to a Martian because it is a way for him to prove his competence and thus feel good about himself.

She gradually falls in love with him as he proves his competence in combat.

These answers were also correct, yet none of them proved the student's competence in the specific academic field being tested.

What else do we have to do to prove our competence?

In most cases, students must prove their competence by completing at least one year of college first.

In fact, she was rapidly proving her competence.

I believe the Agency has proven its competence in this area.

That was the sort of thing he could do in his sleep; he didn't have to prove his competence to anybody.