Secondary school administrators must carefully consider the ramifications of a proposed alternative scheduling plan before proceeding with implementation. The first article in this newsletter presents findings from a study that compared data from two groups of schools (one group with a 4 X 4 block plan and the other with a trimester plan) to data from a group of schools that followed a traditional schedule. Six guidelines are offered for the successful implementation of an alternative schedule: (1) involve all members of the school community; (2) employ a researcher and/or program evaluator; (3) do not become the defender of one kind of scheduling plan; (4) keep communication open among all parties; (5) consider extensive staff development on instructional strategies; and (6) be creative and innovative. The second article describes the experiences of two high schools that took steps to ensure a smooth transition--Springfield Township High School, located in Erdenheim, Pennsylvania (a 4 X 4 block plan) and Hononegah Community High School, in Rockton, Illinois (a 7 X 1 extended period). Five figures are included. (The first article contains 7 references). (LMI)