
Six-year-old Galen looks on as five-year-old Logan dissects an owl pellet.
The kindergartners tend to ramble and mumble. The second graders are more concise. Each student mentions something they are grateful for as they pass a heart-shaped rock, warmed by many little hands, around the circle in a multiage class at Pine Crest School, in Sebastopol, California.
Near the end of the circle, as the students are starting to fidget, a smallish kindergartner named Aidan begins to regale the group with his video game conquests. The tall second grader seated next to him, Everest, stage-whispers in his ear, "Don't tell a long story. Just do your appreciation, or it will take too much time." Aidan wraps it up quickly.
This is the essence of the multiage classroom: Older students model good behavior and, through continual peer mentoring, stretch their teaching muscles and solidify their own knowledge. And the younger students learn that teachers aren't the only ones who know a thing or two. "I haven't had a student yet who, even six years later, didn't remember whom they helped and who helped them," says teacher Terence Rodgers about the mentoring process. "Really, it's pretty magical."

Seven-year-old Trenton is paired up with six-year-old Izzy for a strategy game in a K-2 multiage classroom.
The multiage classroom (the system is also called looping) contains students of different ages and grade levels who stay with the same teacher for several years. In the case of Pine Crest, the classes are K-2 and 3-5. The students learn predominantly in small, heterogeneous groups, and parents often come to class to help lead them. The system provides teachers with a three-year span to get to know their students' strengths and weaknesses and to support the individual growth of each student. Over the years, the class develops into something like a family.
Although the multiage classroom is a rarity in the United States (and getting rarer still as high-stakes testing has taken hold) and requires a special kind of teacher, it offers many lessons adaptable to the traditional classroom -- in particular, student-to-student mentoring.
A landmark study published in June 2007 revealed that older siblings have higher IQ scores than their younger siblings. The cause is not biological, but a result of the interplay between parents and children and the children themselves. In a New York Times article, Robert Zajonc, a psychologist at Stanford University, said he believes the tutoring older siblings give to their younger brothers and sisters has a positive impact on the intelligence of the older children.
"Explaining something to a younger sibling solidifies your knowledge and allows you to grow more extensively," he added. "The younger one is asking questions and challenging meanings and explanations, and that will contribute to the intellectual maturity of the older one."

Ophelia, age five, plays a strategy game with seven-year-old Ruby Maya as eight-year-old Aidan steps in to help.
Russell Yates, educational-programming director at the Swan School, in Port Townsend, Washington, and multiage teacher for grades 3-4, offers the following guidelines on how to get students to mentor each other successfully in your class:
Anda, one of Yates's students, comments on her mentoring experience: "When I am helping other people, I start by showing them how I did it. I do what Russ does. I ask them a question about a part of the problem. They tell me the answer, and I write it down for them on the first and maybe the second section of the problem. Then, they do it all for themselves. If they don't get it, Russ takes over."
Links:
[1] http://www.edutopia.org/molly-jackel
[2] http://www.nytimes.com/2007/06/25/us/25sibling.html
[3] http://www.swanschool.net
[4] http://www.multiage-education.com/multiagen-b/noisemeter.html
[5] http://www.multiage-education.com
[6] http://www.choosingmultiage.com/res_marion.php
[7] http://www.ms-t-inc.com
[8] http://www.concentric.net/~ahenson/homepage.html
[9] http://www.edutopia.org/looping-multiage-classroom-grouping-benefits
[10] http://www.edutopia.org/get-students-together
[11] http://www.edutopia.org/dozen-promising-practices
[12] http://www.edutopia.org/conflict-resolution-peace-helpers-video
[13] http://www.edutopia.org/autism-peer-help-slide-show
[14] http://www.edutopia.org/math-social-activity-cooperative-learning-video