- if it's about taxing some qualitative value of education then it should be a graduate tax applied equally to everyone with tertiary education. I'd be curious how politicans would manage policies on education and taxes on this value when they are paying it too
- if it's not about the qualitative value but about the income, then it should be an income tax.
- if it can't be discharged through normal procedures of bankruptcy and terms are rewritten by politicians then it's not 'just a loan' either.
In the absence of any of these then these are largely generation taxes in terms of how they fall.