Character mistake: After the math club students, in unison, cited pi to 3.141592, Percy continued with "65839" - but only the "65" are correct. He should have said "65358..." before being cut off (or "65359" if he was rounding up the last "89793238"). Even though the movie is classified as a comedy, Percy was showing off, but he was wrong. Charlie, Math Club Advisor, also committed a mistake because he stopped Percy by saying "Percy, we got it. Good" (as though Percy was correct). (00:04:29)
Continuity mistake: When Priscilla meets Elvis in Germany the position of the letters on the bed and of the papers scattered on the floor change positions between shots.
Continuity mistake: When the moderator asks Lydia if she could define one thing Bernstein gave her, Lydia's hands are apart. In the next shot, Lydia's hands are suddenly clasped. (00:12:37)
Continuity mistake: While driving to Harper's house, Jordan did not have the sun visor down, but it was down when she was backing up after she passed Harper's house, #237. The sun visor was not down when Jordan was going down the driveway to the house. (00:17:15)