By Trisha Gedon By Trisha Gedon STILLWATER, Okla. – Students at Zion Public School in Stilwell, Oklahoma, recently set aside their traditional reading, writing and arithmetic studies for lessons on healthy eating, produce and budgeting. More than 100 students in first through third grades had an opportunity to shop at the Mobile Farmers Market set up in the school’s gymnasium, thanks to the High Obesity Prevention Program through Oklahoma State University Extension. Jessie Collins, HOP Program…