On Monday, Microsoft announced the acquisition of video-based social learning platform Flipgrid, used in 180 countries by more than 20 million pre-kindergarten to Ph.D.-level educators, students and families.

According to Microsoft, Flipgrid will be free for schools so it’s easy for any school to utilize the software. Customers who’ve purchased a subscription from Flipgrid will receive a prorated refund, the company stated.

“We’re thrilled to see the impact Flipgrid has had in social learning thus far and look forward to helping them continue to thrive as part of the Microsoft family,” said Eran Megiddo, corporate vice president for Microsoft.

“We’re diligently committed to making sure their platform and products continue to work across the Microsoft, Google and partner ecosystems to benefit students and teachers everywhere,” the company stated.