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story.lead_photo.caption Los Angeles Police officers guard the entrance to City Hall as teachers, parents and students picket outside City Hall in Los Angeles, Friday, Jan. 18, 2019. Clashes over pay, class sizes and support-staff levels in the district led to its first strike in 30 years and prompted the staffing of classrooms with substitute teachers and administrators. (AP Photo/Damian Dovarganes)

LOS ANGELES -- Most educators and parents see class size as an indicator of a quality education and have made it a priority in teacher strikes across the United States in the past year, but its effectiveness is still up for debate.

There's no universal standard for the best class size, though some states and school districts have instituted policies, particularly in lower grades. While many believe smaller is better, studies are mixed on exactly how much it can improve academic outcomes, considering the cost.

The ratio of students to teachers is at the heart of a teacher strike in the nation's second-largest school district, where tens of thousands of Los Angeles educators walked out last week. Teachers have complained about having students sitting on window sills or the floors of overcrowded classrooms that can push past 45 students.

Farther north, some teachers in Oakland called in sick Friday as part of an unofficial rally over their contract negotiations, which hinge partly on a demand for smaller class sizes.

At the high school level, Los Angeles has routinely had more students per teacher than the national average, said John Rogers, a professor of education at University of California, Los Angeles.

He said there's no easy way to assess the impact of class size on educational outcomes over the past couple of decades in the Los Angeles Unified School District -- in part because classes have been overcrowded despite a state mandate calling for an average class size of 30 students through eighth grade.

Rogers said the question of whether districts should be able to increase class size unilaterally is important because it makes teachers feel they lack control over learning conditions.

United Teachers Los Angeles is demanding the elimination of a longstanding contract clause giving the district authority over class sizes. If the district won't agree to remove the provision, union leaders say they can't trust that school officials won't ignore any deal it cuts on class sizes in the future.

The district has insisted on replacing it with new language that also grants it power to raise class sizes under certain conditions, including a financial emergency. It said its latest contract offer included $100 million to add nearly 1,000 additional teachers, nurses, counselors and librarians in 2019-20 and reduce some class sizes. Schools with the greatest needs would see larger reductions -- about four students per class.

But union President Alex Caputo-Pearl said the district's offers were limited to one year and then class sizes could spike again and new staff could be cut. He has called class size a "fundamental issue" that's directly "about educator working conditions."

Superintendent Austin Beutner has said he would like to reduce class sizes even more but the district simply doesn't have the money. He has suggested the union might consider trading other contract demands for greater reductions in class size.

A 2016 report by the National Education Policy Center suggested class sizes be set as low as 15 students in lower grades and found that all things being equal, the student ratio affected their academic achievement.

William Mathis, who wrote the study as an education policy expert at the University of Colorado, pointed to a 1979 study that tracked young students in smaller classes in Tennessee and saw lasting effects. The children had better grades and test scores, fewer disciplinary issues and an increased likelihood of going to college.

But Matthew Chingos, vice president of the Urban Institute's Center on Education Data and Policy, is skeptical of a one-size-fits-all approach. He's studied state-regulated class sizes and says that it may not be the "biggest bang for the buck" for every classroom.

Requiring a school to have more teachers is expensive and potentially problematic, he argues, because it limits local control at the campus level, which in turn can dilute teacher quality.

"Class sizes are a political winner. No one thinks it's bad. If money grew on trees, then sure," Chingos said.

A Section on 01/21/2019

Print Headline: Studies on smaller class size inconclusive

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