Higher education services company Quad Learning Inc. is raising another round of financing. The District-based ed-tech company has reached nearly $4.8 million in a $5.24 million offering, according to a recent filing with the Securities and Exchange Commission. A total of 10 investors have participated in the equity offering. The company could not immediately be reached for comment. We will update this post when we hear back. This latest round follows a series of raises in recent years, including...