The number of mergers and acquisitions in the education industry climbed during the first half of the year, as did the multi-billion dollar value of those transactions, according to a new report. The biggest deal during that period was the acquisition of SkillSoft, an Irish company that provides cloud-based technology services to governments, businesses, and schools, by Charterhouse Capital Partners, for $2.3 billion, according to Berkery Noyes, the independent investment bank that published the report.