This school teaches that the Hawaii was stolen from them by the white man.
It was !
100%
Well, stolen is a little harsh.
Taken over by virtue of greater military prowess would be more like it.
But, hey, that's life on the Planet Earth.
King Kamehameha the Great did not become "Great" by being a nice guy. He became "Great" by conquering (stealing) all the other Hawaiian Islands that did not belong to him.
Let's face it. A strategically located island populated by natives with stone age military technology was bound to be taken over by some military power sooner or later.
The Hawaiians should be thankful that such an inevitable takeover was done by the United States of America and without bloodshed. If not, today, Hawaiians would be an extinct native race that used to live in the Japanese Province of Hawaii.