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School Resource Deputies



The goals and objectives of the School Resource Deputies can be defined but not limited to the following categories:

  • Safety and security on campus.
  • Educate students, school staff and parents about law enforcement functions and responsibilities.
  • Reduce truancy by enhancing the learning environment.
  • Create good will and increase understanding of law enforcement.
  • Strengthen student/police relationships.

Deputy Dave Tackett is assigned to the Campbellsport School District.    
Deputy Dave Tackett

Deputy Tackett began his career with the Fond du Lac County Sheriff's Office in 1996 as a Correctional Deputy.  Tackett was promoted to the Patrol Division in 1998. In January 2011, Tackett was assigned to the Oakfield, Amity and Elmwood schools as a School Resource Deputy (SRD). In August 2018, Tackett was assigned to the Campbellsport School District.  Deputy Tackett has also worked with several of the parochial schools in Fond du Lac County. In addition to his SRD duties, Tackett is an active member of the DIVE Team, conducts forensic interviews for children ages 5-12 and does Driver's Education presentations for the Sheriff's Office.

Tackett is a graduate of Horace Mann High School in North Fond du Lac and holds a Bachelor's Degree in Criminal Justice, with a minor in Sociology, from UW-Oshkosh.

Tackett has provided a wide variety of presentations, to all ages and is also an instructor at Moraine Park Technical College. Tackett enjoys working in the classroom setting and will use these experiences in developing good relations with the students, faculty and the community as a whole.


Deputy Derek Rehfeldt is assigned to the Oakfield School District

 Rehfeldt, Derek

Deputy Rehfeldt began his career in law enforcement in 2013 working as a correctional officer at the Sheboygan County Detention Center. In 2015, he began working for the Fond du Lac County Sheriff’s Office as a patrol deputy. Deputy Rehfeldt began his role as a School Resource Deputy (SRD) in 2018 in the Oakfield School District.

In addition to his school duties, Deputy Rehfeldt is also a part of the Deputy Reserve Unit.

Rehfeldt is a graduate of Winnebago High School (IL) and has a Bachelor’s Degree in Justice and Public Policy from Concordia University Wisconsin. He enjoys his placement in the schools because it gives him an opportunity to work with kids on a daily basis and promote a positive outlook on law enforcement.

Deputy Steve Kastenschmidt is assigned to the Rosendale-Brandon School District.

Kastenschmidt, Steven

Deputy Kastenschmidt began his career with the Fond du Lac County Sheriff’s Office as a Correctional Officer with the Jail Division in 1999. He received a promotion to the Patrol Division in 2002 working several years on all three shifts. Deputy Kastenschmidt was reassigned as the School Resource Deputy (SRD) for the Rosendale-Brandon School District in 2019. He will be responsible for teaching the Anti-Crime Education (A.C.E.) program throughout the school district. He is glad to represent the Sheriff’s Office with this opportunity to be a positive role model while interacting with the children, families, teachers, and school administration.

In addition to his school resource duties, Deputy Kastenschmidt is a veteran of the Army Reserve and was previously a member of the department SWAT Team. He currently is a member of the department Honor Guard, a Drug Recognition Expert (DRE), Field Training Officer (FTO), and Standardized Field Sobriety Instructor.

Deputy Kastenschmidt is a high school graduate of the St. Mary’s Springs Academy and has an Associate’s Degree in Criminal Justice from Fox Valley Technical College. He is currently completing his Bachelor’s Degree in Criminal Justice through Liberty University believing in the importance of continuing education. He also enjoys time with his family, coaching baseball, and being active as an Assistant Scoutmaster for a local Boy Scout Troop.

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