This research tests the effectiveness of taking learning style variables from the Kolb learning model in designing strategic planning seminars. We observe in our research that the participants in the seminar--school principals--positively judge the effectiveness of the seminar. The research also tests the seminar's effectiveness in terms of the appropriateness of the schools' strategic plans. The research finds that the plans are largely successful. The findings indicate that the effectiveness of in-service training seminars increases when the learning styles of the participants are taken into account when planning the seminars. (Contains 6 tables and 1 figure.)