Capable of being trained, educated, or drilled.

adjective. Capable of being trained or educated.

adjective. Capable of being trained, teachable, educatable.

"But practically everyone is trainable, which is why colleges and universities, as enrollment has increased, have turned themselves more and more into training schools."

attainable  explainable  obtainable  sustainable  unattainable  

action-packed  allochthonous  aspirational  coldhearted  compressible  

aimable  aimed  apt  bright  clever