EVERY FOUR DAYS a new edtech company is funded. That's according to "ReimaginED," the latest presentation from NewSchools Venture Fund that reads like an education "state of the union." (Disclosure: EdSurge has received funding from NewSchools.) Now, are these companies addressing real problems? We certainly hope so. Based on sources including mainstream media outlets, foundations, non-profits and market research firms, the 57-slides cover how many new tools and radical teaching models are addressing systemic challenges like income inequality, teacher dissatisfaction and the achievement gap. Check it out.