Children would get fewer French fries and more dark green vegetables in school cafeterias under recommendations being issued today by an Institute of Medicine panel.

In addition, for the first time in the National School Lunch Program, the committee called for calorie limits on meals in an effort to curb obesity. The lunch recommendations allot 650 calories for students in kindergarten through fifth grade, 700 calories in sixth to eighth grade, and 850 calories in high school. Breakfasts should not be above 500, 550 and 600, respectively, for the same grade levels, the committee said.

Recommendations from the panel, made up of scientists and school food officials, must be approved by the Department of Agriculture.

The panel acknowledged that its recommendations would increase costs and called for a higher federal reimbursement to school districts, capital investments and money to train cafeteria workers to make the changes. Food costs for breakfasts could rise as much as 9%, and for lunches as much as 25%, if all the recommendations were enacted, the committee said.