San Mateo Soccer
AYSO Region 36
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Welcome San Mateo Region 36 Referees

Volunteer referees are needed to officiate at every AYSO game, so we need your help! You'll be trained and provided the necessary equipment (e.g., uniform, flags, whistle, etc.)


How to Volunteer for Matches

All referees must be eAYSO-registered for the current year, up to date with Safe Haven training (current or prior year), and certified for the age level they are refereeing.

U6 and U8 parent referees officiate their own team's matches. Cheatsheets for U6 Referees and U8 referees are available.

U10, U12, and U14 referees use the AYSO San Mateo Referee System ( to volunteer for one or more matches.

You can learn more about how to use our referee system to volunteer for matches with our Referee System Tutorial.

We also have a Referee Frequently Asked Questions for common questions new referee have.


Referee Coordinators

For U10, U12, U14, and U16/U19 divisions, referee coordinators assist in ensuring matches are properly staffed. If you have a question regarding a particular division, click on the coordinator's name to email them.

Division Division Coordinator
U6 and U8
U10 William Wong
U12 Stefan Klindworth
U14 Brian Coffman
U16/U19 William Wong and Brian Kersten  More Information for Area 2N.


Additional Referee Resources

Below is a list of resources that have been helpful to our referees.
  1. AYSO San Mateo Referee Procedures
  2. Laws of the Game, 2014/2015 AYSO Edition (English)
  3. Reglas de Juego, 2014/2015 Edicion de la AYSO (Espanol)
  4. AYSO Making the Offside Call - 2015 (PowerPoint)
  5. AYSO Positioning for Free Kicks and Restarts - 2015 (PowerPoint)
  6. AYSO Guidance for Referees, Coaches, Other Volunteers, and Parents - 2015 (PDF)
  7. AYSO Manual for Youth Referees - 2015 (PDF)
  8. USSF Advice to Referees - 2013-2014 (PDF)
  9. USSF Guide to Procedures - 2012 (PDF)
  10. USSF Resource Center Downloads: access to Books and Videos on Laws of the Game, Fitness, Advice to New Referees, and Procedures (select the "Download Files" hyperlink and then Instruction Resources folder)
  11. A score pad to keep track of KFTM


How to Sign Up

For U6 and U8 Divisions, each team must have two trained Parent Referees. For each game that his or her team plays on Saturday, one Parent Referee from each team monitors the game by being on the field with the kids to make sure the kids are safe and have fun. While knowing soccer rules or laws is not important, parent referees must complete:

  1. An e-signed Volunteer Registration Form every year through
  2. "Safe Haven" training at least once every two years through
  3. A 2.5 hour training class

For U10, U12, and U14 Divisions, each team must provide at least one Assistant Referee or Referee (Regional or higher). AYSO uses a three person referee team, consisting of a referee and two assistant referees. The referee serves in the center of the field and oversees the match with the two assistant referees on their half of the touchline. To be one of the referees on the referee team, you must complete:

  1. An e-signed Volunteer Registration Form every year through
  2. "Safe Haven" training at least once every two years through
  3. Referee certification for the age level. For U10 or U12 assistant referees and U10 referees, Assistant Referee or Basic (Regional) Referee certification, respectively, is required. For U12 and above referees, Intermediate Referee certification (or higher) and appropriate experience is required.
  4. Concussion Awareness training (one-time) through (strongly encouraged).

You can learn more about how to sign up to be an AYSO Referee with our Referee Signup Tutorial.


Reporting Game Problems or Misconduct

Kids Zone Feedback is used to document any game problems or incidents of misconduct.  This report must be filed by the referee for any game with sportsmanship point deductions.

Incidents in the Under 16 and Under 19 leagues use the 24 Hour Report which goes to the Area 2N staff.

Sportsmanship Program


©2015 AYSO San Mateo, California
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