Schools increasingly check students for obesity

Nearly 25% of schools record students' BMI.

CHULA VISTA, Calif. (AP) — The Chula Vista school district not only measures the academic progress of Marina Beltran's second-grader, it also measures her son's body fat.

Every two years, Antonio Beltran, like his classmates, steps on a scale. Trained district personnel also measure his height and then use the two figures to calculate his body mass index, an indicator of body fat.

The calculation isn't reported to Beltran or her son, who cannot see the readout on the scale that has a remote display. Instead it's used by the district to collect local data on children's weight.