No it's a fragment hope it helps
Whittier had used symbolism and imagery of war in his poem "To William Lloyd Garrison" when he described the rural nature of the New England including its cultural atmosphere, as well as its religion. In addition, Whittier was among the most prominent poets wherein among his main subject was the American Civil War.
Ann is the subject of the sentence
has taught is the verb phrase
students is the direct object
junior high are adjectives that modify the direct object students
for several years is a prepositional phrase that modifies the verb taught
Judging by the use of Adam in the text, it is more clear to understand that this texts theme is creation.
