This study assessed the effect of the National Aeronautics and Space Administration's (NASA's) Mission X (MX) program on children's knowledge, attitude, and practice of healthy eating and active living (HEAL) and weight status in rural elementary schools in Taiwan.

Inclusion Criteria:

• The thirteen public elementary schools in Tamsui, Sanzhi and Shimen Districts, New Taipei City, Taiwan, were the target population. Schools that were in distance within 30 minutes by car from Mackay Medical College were approached. Eight schools agreed to participate. All 3rd and 4th graders of the participating schools were invited to the evaluation program.

Exclusion Criteria:

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