Greenfield High School has an annual enrollment of about 1,200 students. Thanks to a voter-approved referendum, the school was able to make improvements and additions such as a new academic wing, swimming pool, fitness center and performing arts center. The renovations were completed in 2008. Home of the Hustlin' Hawks, Greenfield High School is part of the Woodland Conference.
- Hours: 6:30am-3:30pm
- Number of students: 1,159
- Public/Private: Public
- Accreditation/licenses: Accredited by the North Central Accrediting Association.
- Number of faculty: 77 teachers, three guidance counselors, four administrators, one school psychologist and 43 support personnel staff
- Grade levels: 9-12
- Student clubs: Chess, Drama, Environmental, FBLA, Fencing, Gourmet Cafe, JFROTC, Math Club, National Art Honor Society, National German Honor Society, National Honor Society, National Spanish Honor Society, Rocket Club, Visual Arts Classic, Yearbook, YESS Club
- Sports teams: Football, Cross Country, Boys' and Girls' Volleyball, Boys' and Girls' Soccer, Boys' and Girls' Swimming, Boys' and Girls' Tennis, Boys' and Girls' Basketball, Wrestling, Golf, Softball, Track and Field, Baseball