Said Hufflepuff, "We'll teach the lot. And treat them just the same."
This isn't saying anyone could be a Hufflepuff. The focus is on "treat them just the same."
Helga Hufflepuff expected her House to be willing to treat everyone with kindness. If you won't, then you can't be a Hufflepuff.
She was willing to teach anyone.
To be a Hufflepuff, you need to want to be taught. You need to want to be kind to others.
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Why Hufflepuffs are Awesome
FanfictionYou might belong in Hufflepuff, where they are just and loyal. Those patient Hufflepuffs are true and unafraid of toil. (And really cool. Plus, we have cookies.) **Companion to Why Slytherins Are Awesome** (completed)