No. Education Edition licenses do not grant access to Java Edition. You would need to purchase separate Java Edition licenses (one-time $26.95 per student, but volume discounts exist).
To understand why Pixelmon doesn't work in the Education Edition, you have to look at the code. pixelmon mod for minecraft education edition
For many students, the ultimate intersection of gaming fun and classroom engagement would be bringing the beloved mod—essentially Pokémon inside Minecraft—into the officially sanctioned Minecraft Education Edition . To understand why Pixelmon doesn't work in the
Unleash Your Inner Trainer: Bringing the Pixelmon Mod to Minecraft Education Edition If you're interested in learning more about the
: Simply double-click the .mcaddon file on your computer; Minecraft Education Edition should automatically launch and import it.
If you're interested in learning more about the Pixelmon mod or Minecraft Education Edition, here are some additional resources: