The MUJC's 31 member school districts and their respective superintendents are listed below:

• Berkeley Heights (Dr. Richard Noonan, Interim Superintendent)
• Bernards Township (Mr. Nick Markarian)
• School District of the Chathams (Dr. Michael LaSusa)
• Clark  (Mr. Edward Grande)
• Clinton Township  (Ms. Michele Cone)
• Cranford  (Dr. Scott Rubin)
• Florham Park  (Dr. Melissa Varley)
• Harding Township  (Mr. Matthew Spelker)
• Kenilworth  (Dr. Marilyn Birnbaum, Acting/Interim Superintendent)
• Livingston (Mr. James O'Neill, Interim Superintendent)
• Long Hill Township (Dr. Edwin Acevedo)
• Madison (Mr. Mark Schwarz)
• Mendham Township (Dr. Salvatore Constantino)
• Millburn (Dr. Christine Burton)
• Montville Township (Dr. René Rovtar)
• Mountainside (Dr. Nancy Lubarsky)
• New Providence (Dr. David Miceli)
• Parsippany-Troy Hills Township (Dr. Barbara Sargent)
• Randolph Township (Ms. Jennifer Fano)
• Roselle Park (Mr. Pedro Garrido)
• Somerset Hills (Dr. Gretchen Dempsey)
• School District of South Orange/Maplewood (Dr. Thomas Ficarra, Interim Superintendent)
• Scotch Plains - Fanwood (Dr. Margaret W. Hayes)
• Springfield (Mr. Michael Davino)
• Summit (Mr. June Chang)
• Union Township (Mr. Gregory A. Tatum)
• Warren Township (Dr. Matthew Mingle)
• Watchung Borough (Ms. Stephanie Bilenker, Interim Superintendent)
• Watchung Hills Regional High School (Ms. Elizabeth Jewett)
• West Orange  (Ms. Eveny de Mendez, Acting Superintendent)
• Westfield (Dr. Margaret Dolan)