Black students are four times as likely to be suspended from charter schools as white students, according to a new analysis of federal education data. And students with disabilities, the study found, are suspended two to three times the rate of nondisabled students in charter schools.

These inequities are similar to those in traditional public schools, where black and disabled students are disproportionately disciplined for even minor infractions, and as early as preschool — although on average, charter schools suspend pupils at slightly higher rates than traditional public schools.

The analysis of charter school data from the Department of Education’s Office for Civil Rights of close to 5,000 charters was done by the Center for Civil Rights Remedies at the University of California, Los Angeles, a nonprofit civil rights research and policy organization.

Still, the report is likely to fuel an often fierce debate about disciplinary practices in charter schools, which are publicly funded but privately run. Some charter networks have come under fire for “no excuses” behavioral codes, under which students can be suspended for offenses like clothing violations.