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MIHS athletics

9100 SE 42nd Street Mercer Island, WA 98040

Welcome! As the new Athletic Director, I am thrilled to join this incredible community. Your passion for athletics is inspiring, and I am honored to be a part of it.

My goal is to create an inclusive and supportive environment for all athletes. Whether you are a seasoned player or just starting out, there will be opportunities for everyone to get involved and grow.

I am looking forward to open communication and collaboration with coaches, parents, and community members to continue to build and develop our athletic programs.

-Lindsey Blaine


Visit our new always-open team store for ALL of our athletic programs. *All orders ship 7-10 days after they are placed and are shipped directly to homes. 



Online Tickets 

Show your receipt at the gate. We also accept cash and credit cards



Visit Arbiter Live or KingCo Athletics for all WIAA Sports Schedules

Signing Day: Tuesday June 4th, 2024

If you are moving on to Intercollegiate sports, please join us on June 4th at 3:30 pm for our official signing day! Fill out the linked form to confirm participation and receive more information as we get closer to the date. The last day to sign up will be Monday, May 27th. 

Registration: FINAL FORMS 

  • Click Final Forms to access MIHS registration site
  • Create a new user ID within Final Forms to register for sports. 
  • Link to step-by-step directions for setting up your Final Forms account can be found HERE

Key Registrations Dates:

  • Registration for all sports open July 1st 2024

  • Football Registration closes August 30th 
    • First day of Football is August 21st
      • Fall Cut sports, Registration closes: August 22nd
  • Winter Cut Sports Registration closes: November 9th  
  • Spring Cut Sports Registration closes: February 27th

*Note for incoming 9th graders, your sports physicals on file at the Middle School do not transfer to the athletic office. You will need to supply a current physical 

Sports fees:

  • Please pay through our online payment system Intouch
  • An ASB card (ASB Fee $70) must be purchased to participate in any sport.
  • $350.00 per sport per season For Payment Plan options, please contact Becky LeMaster
  • Refund Notice (please refer to Eligibility Handbook): You are eligible for a refund for two weeks after the start of the season. No refunds are issued after the second week.

Uniform and Equipment Late Fee Policy:

  • A $25.00 late fee and a replacement cost of the uniform and/ or equipment will be assessed if an athlete does not return uniforms during designated time

Lindsey Blaine

Athletic Director

Becky LeMaster

Athletic Secretary


206-230-6316 (Fax)


 MIHS Athletic Office Hours

 The athletic office is now open during our normal hours: 7:00 am-3:15 pm. 

E-mail is the best way to contact the Athletic Office for sports registration questions.