Welcome to the Mill River Unified Union School District (MRUUSD) website! Our site is continually updated with the latest district information and news. If you don’t find what you’re looking for, please let us know.

School Reopening Information (Updated 4/13/21)

COVID-19/Novel Coronavirus Information (Updated 6/18/20)

Access Volunteer Tutors

Equity Information

MRUUSD 2020-2021 School-year Calendar

MRUUSD 2021-2022 School-year Calendar

Mill River Union High School

Grades 7-12

Link to Mill River Union High School web page

Clarendon Elementary School

Grades PK-6

Link to Clarendon Elementary School web page

Shrewsbury Mountain School

Grades PK-6

Link to Shrewsbury Mountain School web page

Tinmouth Mountain School

Grades PK-6

Link to Tinmouth Elementary School web page

Wallingford Elementary

Grades PK-6

Link to Wallingford Elementary School web page