### Clue: Reformed paper not the middle state school one (7)
### Answer: ORIGAMI 
 ### Explanation: Definition: Reformed paper
 **The central letter of**(… the middle) "not " + RI(abbrev. for the US state of Rhode Island) + GAM(a school of whales) + I(Roman numeral for "one").
Defn: Cryptically, a product of the Japanese art of folding paper into representative shapes.