We're not told everyone's old House in the Harry Potter books. Sort the following in the comments and give reasons if you feel it necessary.
(G)Gryffindor, (S)Slytherin, (R)Ravenclaw, (H)Hufflepuff or (K)Kwickspell (a.k.a. the second finest School of Witchcraft and Wizardry in Britain)
1. Professor Binns
2. Glideroy Lockhart
3. Dolores Jane Umbridge
4. Nymphadora Tonks
5. Stan Shunpike
6. Vernon Dursley (assume he was expelled just for being himself, before shuffling off to Smeltings)
(G)Gryffindor, (S)Slytherin, (R)Ravenclaw, (H)Hufflepuff or (K)Kwickspell (a.k.a. the second finest School of Witchcraft and Wizardry in Britain)
1. Professor Binns
2. Glideroy Lockhart
3. Dolores Jane Umbridge
4. Nymphadora Tonks
5. Stan Shunpike
6. Vernon Dursley (assume he was expelled just for being himself, before shuffling off to Smeltings)