
Plot hole: When Barney's telling Andy about the poem written on the bank wall, Barney blames Opie and doesn't mention anything about Opie using chalk, but when Opie walks in Andy tells him, "Barney says there's a poem written on the wall of the bank, and that you were standin' along beside it with a piece of chalk in your hand," and then in a few moments Opie explains that some big kids pushed the chalk into his hands. So it's impossible for Andy to have known that chalk was used to write the poem, and not a marker, a pen, or a pencil.

Plot hole: In "Violent Is The Word For Curly" (1938), the stooges start singing "Swinging The Alphabet." After Moe starts, he has the girl students join in on the song. Some mistakes follow - first, after a few letters are sung, ALL the girls together change to a higher note and faster tempo (which is impossible since NONE of them knew this song before - let alone ALL switch notes together). Also, they all sing "LA LA LA" backgrounds suddenly when Curly sings solo again ALL at the same time.