Two-year-old startup uLesson announced that it closed a $15 million Series B round.

The investment, which comes 11 months after uLesson raised a $7.5 million Series A, was completed by five investors: Tencent, Nielsen Ventures, and existing investors Owl Ventures, TLcom Capital and Founder Collective. It is the largest disclosed investment in an African edtech startup.

The startup first launched by providing a product pack of SD cards and dongles with pre-recorded videos for K-12 students. They can either access lessons via streaming or use the SD cards to download and store the content.

uLesson has introduced new features for an all-encompassing edtech play for this demographic. It added quizzes and a homework help feature to connect students with tutors from universities. The startup also launched a one-to-many live class feature with polls and leaderboards and a one-to-one live experience for DevKids, a coding class independent of the core uLesson platform. The CEO, who also founded e-commerce platforms DealDey and Konga said:

“What we want ultimately is different strata of free users that can use the app and can pay for a premium experience to attend live classes or get the homework helper.”

The platform is available in other markets, such as South Africa, Sierra Leone, the UK, Liberia, Gambia and the US.