It says “this business is NOT BBB accredited”.
Trump University has an A rating from BBB because it has CEASED OPERATIONS since 2010. Thats why there have been no complaints the last three years.
"On October 7, 2010, Sexton informed SED that TEI had ceased operations."
http://law.justia.com/cases/new-york/appellate-division-first-department/2016/451463-13-16094-16093.html