'Batkid' Miles Scott calls Tulelake his home bat cave...
And teachers at his bat school have been working hard to keep the details of Miles' big day a secret.
Tulelake Kindergarten teacher Jennifer Baley says 'Batkid' Miles Scott knew something was going to happen...
"Miles was very well aware that he was going to be having a wish of becoming Batman. He just didn't understand the scope, and how bit it was going to be."
The school has been keeping details of Miles' big day a secret.
But Principal Vanessa Jones says Miles' love for Batman is no secret...
"In preschool, he had some Batman costumes, and backpack, and some clothes - so he's liked super-heroes for a long time."
Keeping the secret got harder as the news went international.
"I read about it on the U.K. Daily Mail." Notes Mrs. Baley. "I showed him his picture on my iPad, and I read the first paragraph of the article, but I did not read the rest."
Now that the secret is out, students have been decorating the halls with 'Batkid' posters to welcome Miles home from his adventure in San Francisco.
"He's just your average little kindergartner." Says Principal Jones. "Just an awesome little dude."
"He's a great student." Adds Jennifer Baley. "He adds a lot to discussions, and he's just a special, special little boy."
And the villain may have been conquered...Miles Scott's leukemia is now in remission.
If you're a 'Batkid Believer', you might want to check out the 'Batkid Photo Project' on Facebook.