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Green Tree School & Services (GTSS) has relocated into its new building.

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Welcome to Green Tree School & Services

Green Tree School & Services (GTSS) is a nonprofit, state-licensed agency that provides education, therapeutic and clinical support to children ages 5-21 with Autism Spectrum Disorder and Severe Emotional Disability. GTSS only serves children whose disabilities are such that they are unable to succeed in a school- based special education program or participate in out of school activities. Rates of both diagnosis are growing, with 1 in 68 children currently affected by Autism and 1 in 78 children affected by Emotional Disability.

GTSS’ philosophy is rooted in the belief that every child should have the opportunity to learn the academic, social, emotional, and vocational and life skills they need to achieve resiliency and succeed in their learning, living and working environments. GTSS has worked with children and young adults with special needs since 1957, marking over a half century of Transforming Lives and Impacting Communities.

GTSS offers a variety of on-site and off-site services to children with special needs, both directly and through their home school or district. The Approved Private School educates children whose disabilities prevent them from succeeding in a traditional special education program. Specialists work with children, in small groups or individually, to help students meet individual goals. The Outpatient Clinic provides psychiatric evaluation, case management and medication management services to students at the school. Consulting Services, also called Green Tree Partnerships, is an education consulting cooperative created by GTSS. Staff work collaboratively with a school or district and take on the management of portion of that school or district’s special education program. Students who exhibit signs of autism or emotional disabilities, but do not have a complete or up to date Individual Educational Plan, can receive Diagnostic Services from GTSS.

Welcome to the 2015-2016 School Year!


Dear Friends of Green Tree School & Services,

We have a lot to look forward to this year! Where to begin?

Affiliation with Salisbury Management – Over the summer, GTSS became an affiliate of Salisbury Management, a consortium of five organizations that provide education, behavioral support and residential services to children and adults with intellectual, developmental, and physical disabilities. The other affiliates are New Story, PAHrtners, Salisbury Behavioral Health, and Growth Horizons. Under the affiliation agreement, Green Tree School will not change our mission, vision, values, or non-profit status. We will collaborate with our new partners to share best practices, and work towards a shared vision of Transforming Lives – Impacting Communities. Stay tuned for updates!

Partnerships Expansion at Four Mastery Charter Schools – Our Partnerships program has grown from around 50 students to over 150, thanks in large part to expansion to four Mastery Charter Schools. We look forward to sharing outcomes from this innovative work, to help students with emotional disabilities remain with their peers in the most inclusive setting.

Growth in our School – Our Approved Private School started the year with 112 students, up from 91 last fall. This growth has allowed us to enhance our program with the addition of a Therapeutic Life Skills teacher and a Job Coach in our Vocational Department. The Life Skills teacher, will implement a social-emotional learning program and an anti-bullying program this year. The job coach will increase the number of children in our transitional program who have work experiences, on and off campus.

A New Diagnostic Program – We know it can take months for children to receive the evaluations they need to qualify for appropriate support services, both in and out of school. Dr. Cashaw and her team are here to help! Just give us a call. These are just a few reasons we are looking forward to this school year. We hope that you and the children with special needs in your life are also looking forward to a great year. Please give us a call if there’s any way Green Tree School & Services can help.


Patricia Wellenbach Julia Alleman

Patricia Wellenbach
President & Chief Executive Officer


Julie Alleman
Chief Operating Officer


Forms for new and returning school students:



Kiwanis Kickball Social Benefits GTSS

kiwanis event

<< Register Today! >>

Saturday, October 17 at Noon

Kendrick Recreation Center
5800 Ridge Ave.
Philadelphia, PA

Cost:  $20 advanced /  $25 onsite  (All players must be 18+)
Includes: Lunch, T-shirt and at least 2 games

Join team GTSS during registration or bring friends and make your own team! The top two teams get prizes!



GTSS 2014-2015 Impact Statement




Give to Green Tree School & Services through United Way

Green Tree School & Services welcomes gifts made through all area United Ways. Please write GTSS’s number in the “designated agency” box when asked to choose a favorite charity:
#321 for United Way of Southeastern Pennsylvania (SEPA).
                                       Thank You!