とは驚きだ

it's surprising that…

→ と
phrase Rare #30,196
it's surprising that… Follows a statement or clause to express surprise about it.
JA: 彼がそんなに早く来るとは驚きだ。
EN: It's surprising that he came so early.

彼女がそれについて何も知らないとは驚きだ。

It’s surprising that she doesn’t know anything about it.

そのような人物が警官だとは驚きだ。

It's surprising that someone like that is a police officer.

同じ学校とは驚きだ

I’m surprised we went to the same school.

— TAXi (1998)

彼らがアメリカに別荘を持っているとは驚きだ。

It's surprising that they have a vacation home in the United States.

彼女がそんなことを言うとは驚きだ。

I'm surprised that she would say such a thing.

彼がこのことを知らないとは驚きだ。

It’s surprising that he doesn’t know about this.