To the north of the village, which has extended greatly as a residential suburb of the metropolis, is Mill Hill, with a Roman Catholic Missionary College, opened in 1871, with branches at Rosendaal, Holland and Brixen, Austria, and a preparatory school at Freshfield near Liverpool; and a large grammar school founded by Nonconformists in 1807.
In Wichita are Fairmount College (Congregational; co-educational; organized as a preparatory school in 1892 and as a college in 1895); Friends' University (Society of Friends; co-educational; 1898); and Mount Carmel Academy and the Pro-Cathedral School (both Roman Catholic).
In it are the Scoville Memorial Library (about 8000 volumes in 1910); the Hotchkiss preparatory school (opened in 1892, for boys); the Salisbury School (Protestant Episcopal, for boys), removed to Salisbury from Staten Island in 1901 and formerly St Austin's school; the Taconic School (1896, for girls); and the Connecticut School for Imbeciles (established as a private institution in 1858).
In 1906 the college was removed to Aberystwyth, and the buildings are now used by the Connexion as a preparatory school for ministerial students.
Allentown is the seat of a state homoeopathic hospital for the insane, of the Allentown College for Women (Reformed Church, 1867), and of Muhlenberg College (1867), an Evangelical Lutheran institution which grew out of the Allentown Seminary (established in 1848 and incorporated as the "Allentown Collegiate Institute and Military Academy" in 1864); in 1907 the college had 191 students, of whom 109 were in the Allentown Preparatory School (1904), formerly the academic department of the college and still closely affiliated with it.