Possible Clues:

• Crush, and second crush
• Administer clubs in school — but screw up!
• Squeeze into a ball
• Crush head of chemistry with career in school
• A hundred compete in school squash
• Make a loud crunching noise
• Squeeze
• Noise of crushing
• In school, before cross-country event, there's cold squash
• Screw up Introduction to Calculus course in school