In addition to the town and hamlet in New York, two school districts take their name from the river: Wallkill Valley Regional School District, in New Jersey and Wallkill Central in New York (Valley Central also derives its name indirectly from the river).
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Unadilla Valley High School is a public high school located in New Berlin, Chenango County, New York, U.S.A., and is the only high school operated by the Unadilla Valley Central School District.