January 2018 Trainees Receive Certificates of Training                                                           


Attendance at ALL below sessions is required to earn the certificate (Six 3.5 hr days and two 7-hr days )

  • Mon March 6, 1 PM TO 4:30 PM
  • Tue March 7, (FULL DAY) 9 AM TO 12:30 PM & 1 PM TO 4:30 PM
  • Thu March 9, 1 PM TO 4:30 PM
  • Mon March 13, 1 PM TO 4:30 PM
  • Tue March 14, 9 AM TO 12:30 PM
  • Thu March 16, 1 PM TO 4:30 PM
  • Mon March 20, 1 PM TO 4:30 PM
  • Tue March 21, (FULL DAY) 9 AM TO 12:30 PM & 1 PM TO 4:30 PM


This is an online event. Link information will be sent to confirmed enrollees prior to the program start.


Antonio Castro Aranda 
Metropolitan Mediation Services 

Recent Reviews:

"The training was very thorough - I greatly appreciated the ability to engage in [role play] mediations and receive immediate feedback." 
"Trainers are welcoming, organized, competent, and all seem passionate about their work. Very positive atmosphere..."
"I loved it! I thought the trainers were engaging. Their presentations were organized and easy to follow."
"The training was unbelievable. I can't believe how much I have learned & how I have already applied it to my everyday life"

Mediator Training - Conflict Resolution - ONLINE March 6 to March 21, 2023

Register Now! (or be added to notification list)

Thank you for your interest in Metropolitan Mediaion Services 35-Hour Mediator Training. The next training takes place March 6 to March 21, 2023. Please apply here or sign up for updates on future trainings. Completing this form after the registration deadline? Please call Director Antonio Castro Aranda at (617) 241-0300 to find out whether openings remain!

Announcement: Metropolitan Mediation Services is offering a 35-hour mediator training in March, 2023 (dates/times on the left panel).  MMS Mediator Trainings teach skills that can enrich your interactions professionally, in your community, and at home.  Some trainees go on to join MMS' panel of volunteer mediators, an exciting way to serve our communities.
Who attends?: These programs are attended by attorneys; social workers; educators; public officials and administrators; those involved in health care; police officers; realtors; business people; consultants; retired people; community organizers; and volunteers; among others. MMS has been providing these trainings for 36 years. MMS' trainings are extremely well received.  

What does it take to become a professional mediator?  
Before applying, please read our Certification and Career FAQ.

Is English your Second Language?
Before applying, please review this link: Required English Language Skills.


The Full Training Experience  -  ONLINE
MMS succesfully migrated our mediator training program to an online platform, receiving the same high praise which we consistently received for our in-person trainings. This training will take place in 10 3.5 hour segments. We have reduced the "full day" components from our traditinal face-to-face trainings. This training will take place on a “Zoom” platform and will consist of:
  • Six “shorter” days of 3.5 hour sessions and
  • Two “full” days, each made up of two 3.5 hour sessions.

Aren’t 3.5 hour or 7 hour days on Zoom too much?

 We have continued to receive very positive trainee responses to this online program. Trainees find the program tolerable and, even, enjoyable because: Almost every 3.5 hour session of MMS’ mediator trainings includes one to two hours of participatory role play mediation exercises. Trainees find these to be very engaging, challenging, and fun. Time flies. Each of these role play sessions are preceded by one or two topical presentations or activities and each role play is followed up by a brief discussion back in the large group. In this online version, we have reduced the full days to only two. In this way, the full training still can be completed in less than three weeks, rather than be stretched out over a longer period of time.

  • With minor adjustments, this is the same mediator training MMS has offered on our premises for 35 yrs.
  • Time will not be taken away from basic mediation and conflict resolution concepts, process, and skills to address the technical skills of on-line mediation. For trainees who have an interest, a follow-up program will be offered addressing those additional skills.
Online participation requirements:
  • Reliable internet connection
  • Equipment necessary to participate in a Zoom meeting, including a laptop/desktop computer equipped with a working camera, microphone, and speaker. Tablets are not recommended. Attendance via smart phone will not work
  • Full availability for and commitment to the full training schedule
  • Ability to participate in all sessions without distractions or interruptions
Help get the word out: Give your associates, neighbors, and friends ample notice in order to help those who are interested to receive the early enrollment discount and to plan their calendars in advance.  Please help us to publicize these trainings by forwarding or posting this information where those with an interest are likely to see it. You can help us by circulating this information to your friends, colleagues, professional associations, communities, email, or web postings. MMS' friends, colleagues, and past trainees are always our best source of referrals. If you have attended one of our trainings, let people know how rewarding you found the training to be. Please help us to get the word out.
Each session provides 35 hours of training over six part-days and two full-days.
Each trainee receives: Binder of training materials, articles, and handouts
  • Copy of The Mediator’s Handbook (List price: $34.95)
  • Metropolitan Mediation Services certificate of completion (must attend all sessions)
More information: A link to our general website where those interested can read about M.M.S. in general, read about our trainings, or apply for training is at: http://metromediation.org/
or call: 617-241-0300 with questions.