One: There is a relatively large Muslim presence in and around Fresno; at least 3 masjids are located at Fresno.
Two: There was—may still be—a radical Muslim community in the foothills just outside Fresno: http://www.freerepublic.com/focus/f-news/566591/posts
Three: This IS the Islamic JESUS (Issa), as portrayed in Islamic eschatology: he returns to earth and leads the fight to kill all the Jews & Christians who still fail to see the light and become Muslims; and leads the final assault on Jerusalem. Any Muslim killed in this automatically (like any Muslim killed in jihad) achieves Paradise.
This 7th grader has used the assignment to produce a poster promoting mainstream Islamic end-times belief, disguised as a dig against the Crusades and Christians.
Certainly plausible on the face of it. ... What is M M I J at the bottom of the picture?