Education is teaching kids to think for themselves while giving them the ability to tell fact from bullshit.
Indoctrination is forcing your own ethics, morals, and beliefs onto children who lack the ability to discern fact from bullshit, usually early enough in their development to ensure that the bullshit you’ve forced onto them becomes permanently encoded into their brain structure.
Nobody’s indoctrinating college students. The students are being taught to critically analyze information and are using that critical analysis to realize that the worldview they’ve been spoon-fed is bullshit.