John L. Crew Sr., a career educator whose seven-year tenure as superintendent of Baltimore City public schools in the late 1970s and early 1980s was marked by rising student achievement — and by a reputation as a steady and calming influence — died Saturday of dementia at FutureCare Lochearn.

The longtime Ashburton resident was 85.

"I knew John when he was superintendent of schools and we both served in the mayor's cabinet," recalled Dr. Linwood Ivey, who retired in 1989 as director of the city's Urban Services Agency. "He was one of the brightest men I've ever known."

Continued Ivey: "He was direct and brutally honest about things. He knew what he was doing, understood education and loved children. I seldom see it mentioned that John was the one who should get the credit for increasing student test scores. I was always impressed with him."

When Dr. Crew resigned as superintendent of city public schools in 1982, an article in The Baltimore Sun described him as one of the "deans of big-city superintendents," whose job had been a "psychological and physical killer" and quite possibly the "toughest job in American public life."

Reflecting on his past several years ago, Dr. Crew told a Baltimore Sun reporter: "That was all 25 years ago. I tried to make a contribution, and I think I succeeded. When I was superintendent, I used to say: 'Forget about a lot of planning. You've got to get your hands dirty and touch people.'"

The son of a carpenter and a homemaker, Dr. Crew was born and raised in Westminster, S.C.

After graduating from East End High School, he enlisted in the Navy and served with the Seabees in the Pacific Theater during World War II.

He earned a bachelor's degree in business administration in 1952 from what is now Morgan State University, where he was a member of the Army ROTC. An active reservist, he eventually obtained the rank of colonel.

He earned a master's in 1955 from New York University, and a doctorate in research, design, measurement and statistics in 1968 from the University of Maryland, College Park.

He began his career with the city school system in 1955 as an educational psychologist.

Dr. Crew left a decade later to become supervisor of research and evaluation for the Maryland Department of Education and, later, a teacher at West Chester State College in West Chester, Pa.

He returned to Baltimore and city schools in 1969, when he was appointed director of special services for pupils.

Dr. Crew later was appointed deputy head for planning, research and evaluation by then-superintendent Dr. Roland N. Patterson, where he served as the architect of the 1974 and 1975 desegregation plans.

It was during this time that Dr. Crew honed his skills as an administrator and planner. After Dr. Patterson was fired in 1975, the school board turned to Dr. Crew, who was appointed interim superintendent. On April 1, 1976, he was given the top job.

Dr. Crew — who had "kept his nose clean" and was not political like the former superintendent — won support for not being a "Patterson man," The Baltimore Sun reported at the time.

After the end of the tempestuous Patterson era, it was Dr. Crew who brought a sense of calm to both staff and students.

Wrote Mike Bowler in his 1991 book, "The Lessons of Change: Baltimore Schools in the Modern Era": "[Dr. Crew] was not a native Baltimorean, but he had been with city schools since 1955, when the 'burning question,' he remembers today, 'was whether black folks could test white kids.'"

Continued Mr. Bowler, who covered city schools for The Sun: "Crew is not an articulate public speaker, but he can express himself with burning intensity. On one such occasion early in his tenure, he told a friend, 'I'm going to show the world that black kids can learn as well as whites. I'm going to do it in five years.'"