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The Aro gTér is a lineage within the Nyingma school of Tibetan Buddhism. The terma on which it is based teaches all Buddhist topics from point of view of Dzogchen. Aro gTér was founded in the 1980s by Ngakpa Chögyam. It is a ngagpa or non-monastic lineage and so emphasizes householder practice and non-celibate ordination. All of its contemporary teachers are ethnically non-Tibetan.
The contemporary Aro gTér organization was founded in the 1980s by Ngakpa Chögyam, also known as 'Ngak'chang Rinpoche'. He was born in Hanover, Germany in 1952 and grew up in England. His father was English and his mother German; he is distantly related to the composer Franz Schubert. From the early 1970s through 1989 he studied Buddhism in between periods of working as a manual laborer, factory worker, and a truck driver in Britain to subsidize his education. 
According to a terma which Ngakpa Chögyam received in visions, the Aro tradition has antecedents in a 'Mother Essence Lineage' of female tertöns stretching back to Yeshe Tsogyal, and forward to Kyungchen Aro Lingma (1886-1923). According to the Aro gTér, Kyunchen Aro Lingma first discovered the terma. Aro Lingma is said to have transmitted the lineage to her only son, named Aro Yeshe (1915-1951).
Ngakpa Chögyam was recognized as the tulku of Aro Yeshe by Dilgo Khyentse Rinpoche, and as the incarnation of Aro Yeshe's predecessor, 'a-Shul Pema Legden, by Khordong gTerchen Tulku Chhi'med Rig'dzin Rinpoche.
In the 1970s, Ngakpa Chögyam studied with Chhi'med Rig'dzin Rinpoche, Dudjom Rinpoche, Dilgo Khyentse Rinpoche, Kunzang Dorje Rinpoche, and Khamtrül Yeshé Dorje Rinpoche He has written of his experiences of these times in his 2011 book Wisdom Eccentrics. 
Teachings and practices
The principal practices are tantra and Dzogchen.
- Simmer-Brown 2001, p. 346.
- Cousens 2010, p. 196.
- "Ngakpa Chögyam Biography". Aro Books Worldwide. Retrieved 3 February 2015.
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- Chhi’-mèd Rig’dzin Rinpoche 2003.
- Ngakchang Yeshe Dorje Rinpoche 1991.
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- Chögyam & Déchen 2003, p. 308.
- Chögyam, Ngakpa (1994), "The mother essence lineage", Gassho 1 (5), retrieved 2009-05-18
- Chögyam, Ngakpa (2011). Wisdom Eccentrics. Aro Books, Inc. ISBN 978-0965394864.
- Cousens, Diana (2010). "Aro gTér". In Melton, J. Gordon; Baumann, Martin. Religions of the World: A Comprehensive Encyclopedia of Beliefs and Practices (2nd ed.). Santa Barbara: ABC-CLIO. p. 196. ISBN 9781598842036.
- Rawlinson, Andrew (1997). The book of enlightened masters : Western teachers in Eastern traditions (first print ed.). Chicago, Ill. [u.a.]: Open Court. ISBN 978-0812693102.
- Rig'dzin, Chime (2003), "Foreword", in Chögyam, Ngakpa; Déchen, Khandro, Spectrum of Ecstasy: The Five Wisdom Emotions According to Vajrayana Buddhism, Shambhala Publications, ISBN 978-1-59030-061-9
- Simmer-Brown, Judith (2001). Dakini's warm breath: the feminine principle in Tibetan Buddhism (1st ed. ed.). Boston: Shambhala. ISBN 1-57062-720-7.