Haines seventh-graders completed a year-long lesson in the life-cycle of food Monday, when they harvested vegetables from garden plots they fertilized last year with compost of their own lunches.

The project started a year ago, when the same students were charged with making compost of table scraps from the school cafeteria. The work got smelly but the fruit of their labor became evident during this week’s harvest.

Students gleaned two plastic toboggans of potatoes and…