Crystal Lake South High School Booster Club
  • Home
  • Important Dates
  • Dine out Nights
  • This is CLS!
  • Business Supporters
  • Documents
  • Giving back to CLS
  • Spirit Wear
  • Trivia Night 2026
  • Volunteer Opportunities
  • CLS Boosters Meetings
  • More
    • Home
    • Important Dates
    • Dine out Nights
    • This is CLS!
    • Business Supporters
    • Documents
    • Giving back to CLS
    • Spirit Wear
    • Trivia Night 2026
    • Volunteer Opportunities
    • CLS Boosters Meetings
Crystal Lake South High School Booster Club
  • Home
  • Important Dates
  • Dine out Nights
  • This is CLS!
  • Business Supporters
  • Documents
  • Giving back to CLS
  • Spirit Wear
  • Trivia Night 2026
  • Volunteer Opportunities
  • CLS Boosters Meetings

Important Dates!

Please join us for our monthly meetings in the CLS Booster's room (near the cafeteria) at 6pm. Enter to win our Booster meeting raffle prize!

Watch out for upcoming events!

The CLS Booster's Country Craft Fair is COMING!

The CLS Booster's Country Craft Fair is COMING!

The CLS Booster's Country Craft Fair is COMING!

Please join us for the largest craft fair in McHenry County!!!

SAVE THE DATE!!!

The CLS Booster's Country Craft Fair is COMING!

The CLS Booster's Country Craft Fair is COMING!

Gather your teams and set the date aside for 6pm February 20th! You don't want to miss it!

Copyright © 2026 Crystal Lake South High School Booster Club - All Rights Reserved.

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