Read Article Regional School Unit 10 officials look at photos of school building designs Wednesday at Mountain Valley High School in Rumford. From left, clockwise, are Meroby Elementary School Principal Kim Fuller, Curriculum Coordinator Leanne Condon, Technology Director Brian Carrier, school board Director Jerry Wiley of Buckfield, Superintendent Deb Alden, Building, Grounds and Transportation Director Scott Holmes and school board Director Peter DeFilipp of Mexico. Marianne Hutchinson/Rumford Falls Times RUMFORD — Regional School Unit 10 directors, administrators and Building Advisory Committee members discussed design plans for a new school with architects Wednesday at Mountain Valley High School. The district proposes to build a school for prekindergarten through grade 8 students at the site of Meroby Elementary and Mountain Valley Middle schools in Mexico. The school would house students from Rumford and Mexico elementary schools and the middle school.