AOS Home

AOS Home

Welcome to the Athletic Officials Service Website!

We are glad you are here.  Please browse the site using the top and side navigation menus to find the information you need.  AOS is one of the original organizations for officials in Illinois and we are here to serve the Illinois Football and Basketball officiating community.  If you have any questions, please contact us at

Basketball Post Season

Congrats to our AOS Members who have received a post season assignment from the IHSA in Girls Basketball.  Don’t forget to share the good news by submitting your assignment on the Chicagoland Refs website.  CLICK HERE to submit.

Board Nominations

The AOS Board is currently accepting nominations for the following board positions up for election this year:

Membership Chairman
Football VP
Basketball Board Member

Check your email to submit a nomination.  The deadline to submit your nominations is February 15, 2022. The election will follow once the nominations have been received.

Spring Banquet

AOS will hold our annual Spring Banquet on Monday, March 14th.  Mark your calendars!  Look for an invitation soon.

AOS Golf Outing

The 13th Annual John Katzler Golf Outing for Leukemia Research! Will be held on June 4, 2022 at Arlington Lakes Golf Club.  Dinner is at the Golf Club following the tournament.  The format will be a scramble.  Golf, Pizza & Prizes with a cost of $100 per player (2 Drink coupons), $10 raffle included.  If you would like to just attend the dinner, the cost is $15. 
Check-in is at 11:00 AM, Shotgun Start at Noon, Dinner at 4.
For more information, contact Jeff Curtin, Email or Raul Zaldivar, Email.  To register, CLICK HERE or contact Jeff or Raul.
A portion of the proceeds will benefit the Leukemia Research Foundation (LRF) in John Katzler’s name. Limited to 52 players.  Please RSVP before May 26; Singles are Welcome!  Include your average score for 18 holes. 
If you are able to donate a prize, please contact us!

John Graham Passing

We were saddened to hear of the passing for former North Suburban Girls Basketball Assigner John Graham.. John was a longtime Certified IHSA football and basketball official and is a lifetime member of the Northern Officials Association. In 2012, he was inducted into the Lake County High School Sports Hall of Fame. A celebration of his life will be held from 1 to 4pm Sunday, March 6, 2022 at The Regent Center, 1200 Regent Drive, Mundelein, IL 60060. CLICK HERE for his obituary. 

Membership Dues

Just a gentle reminder that if you haven’t already, it’s not too late to pay your 2021-22 AOS Membership fee.  The membership fees for this year were reduced to $35 for a single sport and $50 for a dual sport membership.

Check your email for details.

If you do not plan to renew, please email so we can take you off the list.  We are also looking for new members to join our organization.  If you know of someone who would like to be part of AOS, invite them to join.  Details are below.  Membership fees are waived for first year members.


Would you like to Join AOS?

Contact our Membership VP Dave Lopshire

Click here to access the AOS Membership Application