Delegate Jay Walker, D-Prince George's, introduced a bill this month that would require public elementary school students to participate in 150 minutes of physical activity per week, including at least 90 minutes in physical education class. Most jurisdictions require their schools to offer physical education classes within a minimum and maximum range of time. For example, in Somerset County, schools must offer between 50 and 120 minutes of physical education per week. Some, like Calvert County, have a fixed time requirement, not a range. Right now, seventeen out of 24 jurisdictions' minimum requirements are lower than 90 minutes. And the maximum allowed duration for physical education in Allegany (45 minutes), Montgomery (55 minutes) and Anne Arundel (60 minutes) counties is significantly less than the 90-minute minimum proposed in the bill.