Houses and Interhouses

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Across
  1. 4. Cunning, competitive, and somehow always at the centre of a interhouse controversy.
  2. 5. Rose-colored glasses make every year look like their year.
  3. 7. I happen every year, involve two courts and plenty of points, yet most people only hear about me if they’re playing. What am I?
  4. 8. I reward those who listened all year and publicly expose those who definitely did not. Suddenly, every random fact your teacher mentioned matters. What am I?
Down
  1. 1. Sticks on one side, tackles on the other; either way, someone’s coming back with grass stains. What am I?
  2. 2. Cool, laid-back, and suddenly climbing the ranks.
  3. 3. For one day, houses trade balls for instruments, athletes become backing vocalists, and everyone discovers who can actually hold a note. What am I?
  4. 5. I begin with a whistle, end with bragging rights, and make four houses dream of lifting the cup. What am I?
  5. 6. Amber, underestimated, and apparently musically unstoppable this year.