Schools in Middle River, MN Greenbush Middle River School335 3rd St NMiddle River, MN, 567372182223690Private Schools K 12 Greenbush/Middle River SchoolPO Box 130Middle River, MN, 567372182223310Private Schools K 12 Middle River School335 4th St NMiddle River, MN, 567372182223310Private Schools K 12 Show MoreSee AlsoPrivate Schools (K-12)