After Ravens running back Ray Rice posted on Facebook about the alleged bullying of a boy at Dundalk High School, Baltimore County school officials said Thursday that they had "thoroughly investigated" the situation.

School officials are prohibited from speaking publicly about an individual student, but in its statement the school system said procedures had been followed.

In a Thursday morning Facebook post, Rice said, "I want to know exactly what is going on at Dundalk High School. NOT happy about all the messages I am getting from students about a boy being bullied so bad."

Rice said he was not happy that many of the messages involve the staff not acting or taking written reports, which they are required to do. He asked for commenters to message him. "This is avoidable," he wrote.

A Ravens spokesman said Rice would not be commenting beyond the statements on Facebook.

Dundalk Principal Tom Shouldice said the school has an excellent record of anti-bullying efforts and invited Rice to come visit the school to see what programs are under way.

"Dundalk High School has an outstanding anti-bullying program. It is one of the models for the county," Shouldice said.

He added that every teacher and administrator in the school has had training in bullying prevention through a new program and every student gets a monthly anti-bullying lesson.

"We are doing absolutely everything we can think of," Shouldice said. "We would cordially invite Ray Rice to see what is truly going on before he makes a comment."

As principal for the past several years, Shouldice has put an emphasis on improving the culture of the school and has been successful with a largely new staff in turning the school around academically. The graduation rate is up and so are most indicators of school success.

Rice, whose younger sister was bullied, has been an outspoken advocate for anti-bullying measures. He held two rallies in Howard County after the death of Grace McComas, a Howard County teenager who took her life after being bullied.

Baltimore Sun reporter Aaron Wilson contributed to this article.

liz.bowie@baltsun.com