In 1845, money was gathered to support him and his family by enabling him to preach, establishing the Lund Missionary Society, where he became director in 1846.

The conditions at the school, with the older humanities degree, led to a one-year delay in the abolition of the traditional studentexamen.

Every year, some ten courses are organized in the fields of church services, pastoral care, diaconia and international activities.

A number of well-known priests, including 25 from the Lutheran Augustana Synod, attended the Fjellstedt School.

[2] Scholar Conrad Bergendorff notes, "It would be no exaggeration to say that the Fjellstedt influence was a predominant one in the development of the character of Swedish Lutheranism in the United States.