Quad Partners and Carlyle Group invested in Accelerate Learning, a global provider of PreK-12 science, technology, engineering, and mathematics education products and services. Financial terms were not disclosed. “We are thrilled to partner with The Carlyle Group and Quad,” said Vernon Johnson, CEO of Accelerate Learning. “We’ve experienced strong growth in recent years, delivering STEM products and services that improve student performance and support for teachers. We look forward to continuing that outstanding growth with Carlyle’s and Quad’s resources and appreciate the continued involvement of Rice and Owl.”