Slightly fewer Gwinnett County students were suspended during the last school year than in the prior school year, according to a report released by district officials Thursday.

In-school suspensions and out of school suspensions each declined by about 2 percent from 2012-13 to the 2013-14, the report said.

The report showed a greater decline in bullying and gang activity in recent years. The percentage of disciplinary referrals for gang activity and bullying dropped by 76 percent and 45 percent, respectively, since the 2010-11 school year, officials reported.

Gwinnett officials credited anti-bullying programs and mentor programs for the declines.

The report showed nearly 80 percent of Gwinnett students called in for disciplinary hearings were black or Hispanic. About 60 percent of Gwinnett students are black or Hispanic. Gwinnett started a mentoring program in 2008 to work with middle school students at risk of appearing before a disciplinary panel.