MA: Marin Academy
MAHS: Menlo-atherton High School
MBA: Monterey Bay Academy
MBARI: Monterey Bay Aquarium Research Institute
MBFD: Manhattan Beach Fire Department
MBFD: Morro Bay Fire Department
MBFPD: Meeks Bay Fire Protection District
MBHS: Morro Bay High School
MBPD: Manhattan Beach Police Department
MBUSD: Manhattan Beach Unified School District
MBVFD: Muir Beach Volunteer Fire Department
MCAA: Marysville Charter Academy For the Arts
MCFD: Marin County Fire Department
MCFD: Mariposa County Fire Department
MCFD: Merced County Fire Department
MCH: Middle College High
MCHS: Maria Carrillo High School
MCHS: Marin Catholic High School
MCHS: Mariposa County High School
MCHS: Middle College High School
MCHS: Milken Community High School
MCHS: Mira Costa High School
MCHS: Moreau Catholic High School
MCHS: Mount Carmel High School
MCOE: Madera County Office of Education
MCOE: Marin County Office of Education
MCOE: Mariposa County Office of Education
MCOE: Mendocino County Office of Education
MCOE: Merced County Office of Education
MCOE: Modoc County Office of Education
MCOE: Mono County Office of Education
MCOE: Monterey County Office of Education
MCP: Mission College Preparatory
MCS: Modesto City Schools
MCSD: Madera County Sheriff's Department
MCSD: Merced City School District
MCSD: Mono County Sheriff's Department
MCSO: Marin County Sheriff's Office
MCSO: Medocino County Sheriff's Office
MCSO: Merced County Sheriff's Office