1. The person who provided Lori's voice is replaced(because of death)
  2. The person who provides Andy's voice, doesn't do the voice for Andy in the opening theme song
  3. The Larkin's drive a beige SUV(from season 1) instead of a teal coloured car
  4. Mush's car becomes dark blue(from season 1) from light blue
  5. Principal DeRosa's car becomes yellow(from season 1) from purple
  6. Danny seems to like girls and wants to have a girlfriend more
  7. Andy tends to use light curse words, in previous seasons his language was clean