The D.C. Board of Education, in a move designed to bring "consistency of leadership" to the system, two weeks ago approved the appointment of seven principals to three-year terms. Each of the seven had been serving as acting principal at their respective schools.

Each of the appointments had been recommended by D.C. School Superintendent Floretta D. McKenzie.

"We are putting forth an effort to bring stability and consistency of leadership to the schools," said school system spokeswoman Janis Cromer. Each appointment becomes effective Jan. 1, 1983, Cromer said.

Erma B. Fields will become principal of J. O. Wilson Elementary. Fields, a graduate of the D.C. Teachers College, was a co-author of the school system's gifted and talented students program. Fields had served as acting principal of Wilson since 1981.

New Langley Junior High School Principal is Leonard A. Upson, who was an assistant principal at Langley from 1977 to 1981, when he became acting principal.

Christine Burgess will become principal of Lincoln Junior High School. A teacher in the city public schools for 22 years, Burgess taught at six D.C. schools from 1955 through 1977.

Ray Bledsoe, acting Gibbs Elementary School principal, will become principal. Bledsoe has also been an administrator at Brent and Drew elementary schools.

Janie Prue, acting principal of Kimball Elementary School and a D.C. teacher from 1956 through 1972, will become principal there.

LeGrande Baldwin, former principal of Houston Elementary, has served as acting principal of Maury/Lovejoy Elementary since 1981 and will remain in charge of that school.

William A. Lipscomb, formerly a clinical supervisor for the University of the District of Columbia, has served as acting principal of Merritt/Carver Elementary since 1980 and will serve as its principal for the next three years.