The Intriguing Association Between Principal Unionization and Charter School Academic Outcomes Share Close Share Why is Facebook not here? Why is Twitter not here? Share on LinkedIn Share on Google Plus Permalink Email June 2, 2022 Learn More: NEPC Resources on Charter Schools A new study finds that charter schools have better academic outcomes when their principals participate in collective bargaining. Newsletter Expand Download Print Share Share PDF: Why is Facebook not here? Why is Twitter not here? Share on LinkedIn Share on Google Plus Email Download or Print Permalink Copy Link Embed PDF: Copy Embed Code