This school began operation on October 11, 1924 at Cíyīn Temple 慈因寺 in Běijīng 北京. This Buddhist Seminary 佛學院 was founded by Tàixū 太虛 to prepare students to go study Tibetan Buddhism in Tibet. Welch reports that two-thirds of the school's fifty students were monks, while the remainder were laypeople. The primary teacher was Dàyǒng 大勇, who had studied Japanese Esoteric Buddhism 東密 in Japan. Other teachers included Dorje Sripa Gegen, Tàixū, and (occasionally) the Panchen Lama 班禪.
Ten of the first (and only) graduating class formed the Residing-in-Tibet Dharma Studies Group 留藏學法團 and, led by Dàyǒng, they embarked for Tibet in the fall of 1925. The school closed at that time.
References:
Welch, Holmes. The Revival of Buddhism in China. (Cambridge: Harvard University Press, 1968), 197-199.