Schools in Seneca, Kansas, the US. Schools locations in Seneca, Kansas. Find the nearest schools locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Real estate School All schools in Seneca Nemaha Central Grade School School +1 785-336-2173 110 North 11th Street, Seneca, Kansas 66538 Write a review Phone Website Directions Nemaha Valley Special Ed Co-Op School +1 785-336-2181 316 Main Street, Seneca, Kansas 66538 Write a review Phone Directions