Elementary School of the Apes/References

Continuity

 * They mentioned at Homer is a former astronaut as a references to Deep Space Homer.

Cultural references

 * When Homer landing in the school yard he belived at he travled to the future and the apes has taking over as in Planet of the Apes.
 * When Bart dressed as an ape climbing at a skyscraper holding a doll is it a references to King Kong.