According to the Boston Herald (full article, click here)
"Kyle P. Loughlin, who inappropriately touched the children between January and March 2015 while working at the BSU Children’s Center, pleaded guilty in Brockton Superior Court to charges including rape and abuse of a child and indecent assault and battery on a child under 14. Judge Angel Kelly Brown sentenced him to 7 1⁄2 years in prison followed by 10 years of probation."
What you may not understand is that when a criminal pleads guilty he is pleading guilty to lesser charges than the crime he actually committed. There are many reasons why this leads to a false sense of security for the public.