Become a Big

Together, we are Defenders of Potential

In just a few hours a month, you can directly impact a child’s future. By simply grabbing a slice of pizza, taking a trip to the library or the park, you can make a difference in the life of a child. Become a big today!

What is a Big?

A ‘Big’ is a volunteer mentor who is matched in a one-to-one relationship with a child (Little) in our program. A mentor is a friend and a supporter, as well as a positive and consistent addition to the life of a Little. A Big Brother or Big Sister is not a replacement parent, a babysitter or a therapist. Children need someone to help share a different perspective on life and help to empower their endless potential.

After you become a Big and match with a Little, they are assigned a Match Support Specialist who will oversee and monitor the match. Our staff will answer any questions, guide and assist with any issues or difficulties, and ensure that all parties are benefiting from the relationship. Additionally, BBBSLI provides training and support services for the duration of the match relationship.

Check out our Match Stories

How to Become a Big

Eligibility requirements:

  • Be 18 years of age or older
  • Pass a background check
  • Have a valid NY drivers license, insurance, and vehicle
  • Commit to at least one year in the program

The Process:

  1. Apply
  2. Orientation & interview
  3. In-depth screening & match
  4. Match introduction
  5. Ongoing support

Start Your Application

Being a Big Brother or Big Sister is incredibly fulfilling and fun, so let’s get you started! Either:

Big and Little smiling

Apply Online

Apply Online by entering your Zip Code and filling out the information as prompted.


Application Packet

Download the Become a Big Application BBBSLI Volunteer Application Packet and mail, email, or fax it to:

Big Brothers Big Sisters of Long Island
25 Carle Road
Westbury, NY 11590
Fax: (516) 731-0486

If you have any questions or would like additional information, please contact us at (516) 731-7880, ext. 1212 and we’ll be delighted to chat with you further!

Take the First Step in Becoming a Mentor