The following are among actions taken at the July 14 meeting of the Montgomery County Board of Education. For more information, call 279-3617.

SMOKING IN HIGH SCHOOLS -- The Medical Advisory Committee recommended that the board establish a uniform policy on smoking in county high schools and end the current policy of allowing individual principals to decide whether to permit smoking by students or employes.

Two of the county's 19 high schools, Seneca Valley High School in Germantown and Walt Whitman High School in Bethesda, have announced they will ban all student smoking in the coming school year. The schools reached the agreement after discusssions among faculty and students.

According to a policy started in 1969, high schools may designate smoking areas for students. The policy permits tobacco use by students under age 18 if they bring a note of approval from their parents.

The Seneca ban came after the death of Hugh M. McCabe, a popular social studies teacher at Ridgeview Junior High School in Gaithersburg and assistant football coach at Seneca Valley. McCabe died last year of lung cancer at the age of 47. Before his death, he created a documentary film about his battle with the disease. Seneca Principal Richard Dumais said the school smoking ban came through efforts of the student government and followed showings of the film at the school.

NONRESIDENT TUITION -- The board set nonresident tuition rates for the 1987-1988 school year.

For half-day kindergarten students living in another Maryland county, tuition will be $3,473 compared to $3,266 for the 1986-87 school year. Out-of-state half-day kindergarteners will pay $3,481 to attend school in Montgomery, up from $3,280.

For full-day kindergarten students living outside the county tuition will be $4,878, up from $4,562 last year. Full-day kindergarten for out-of-state students will cost $4,893, up from $4,590.

Elementary school students living outside the county will pay $4,539, up from $4,312. Out-of state elementary students will pay $4,554, up from $4,340.

Secondary school tuition for students residing outside the county was set at $5,417, up from $4,989. Secondary students outside the state will pay $5,432, up from $5,017 last year.

The largest increase approved by the board was for special education classes. For out-state special education students, tuition rose from $8,708 last year to $11,233 for the coming school year. For special education students living outside the county, the cost rose from $8,680 to $11,218.