Both Khan Academy and Google, as well as thirteen others, have joined the growing list of companies pledging to protect students' privacy. President Obama spoke about the pledge last week, and before doing so several companies including Apple and Microsoft had signed. A total of 75 companies had signed last week, and Google and Amazon were both criticized for not doing so. On Monday, 15 new companies -- including Khan Academy and Google -- jumped aboard. This follows the administration's increased push for data security.