Part of the School Improvement Research Series, this report describes two peer tutoring programs, one at the secondary and one at the primary level. The schools where the programs are conducted are both in the Lake Washington School District, across Lake Washington from Seattle. The report first cites Lake Washington High School (Kirkland), where major program features are as follows: elective credit; staffing by subject matter teachers; student selection based on interest and willingness; focus on target classes; tutor-tutee pairs; training for students; mini-lessons; a testing program; "master note takers"; recordkeeping; and planning/coordination activities. The report describes the program based on observation of three peer tutoring classes (the program involves 125 to 150 students) and includes student responses to questions on peer tutoring. At Benjamin Rush Elementary School (Redmond) the second school presented in the report, major features of the cross-age program include a reading room; tutor selection; tutee selection; partners in reading, a motivational reading program on a two-day cycle; use of the tutor's lunch/recess period; training for tutors; recordkeeping; and monthly meetings. A reading specialist's recommendations, a brief description of a tutoring session, and students' comments conclude the report. (SR)