What's the real motive of crane behind his visit to Sleepy Hollow?

Ichabod's went to Sleepy Hollow and stayed on as a teacher. From the word "tarry", we can infer that Ichabod did not intend to stay for a lengthly period of time.

In this by-place of nature there abode, in a remote period of American history, that is to say, some thirty years since, a worthy wight of the name of Ichabod Crane, who sojourned, or, as he expressed it, “tarried,” in Sleepy Hollow, for the purpose of instructing the children of the vicinity.