Nelson's drawings came out of a character flaw in the script about Nelson being a horrid speller. Tom began to misspell words on purpose as Nelson (his character) killed time, and soon the writing of misspelled words morphed into poor sketches of each candidate being interviewed.
For a laugh, the school fight song "Fighting Otters" was written by Tom Kiesche & Lori Alan in-between takes. No one had any idea that Nelson and Miss Everbomb would be singing it in the library later.
Though the series was fully scripted, the 1st shot on the 1st day was 90 minutes of improv, Nelson (Tom Kiesche) alone, in Wesley's (David Snell's) office.