Part of relentless Google/Microsoft competition to be first in class; check this Google post for more details; also see Microsoft expands virtual reality ambitions with Google Cardboard rival (CNet)
"But the advent of Google Expeditions is also indicative of an industry strategy shift. Some leading tech companies have recently made a decision to focus on designing products specifically for classroom use, rather than simply modifying their existing consumer or enterprise products and then marketing them to schools.Google Virtual-Reality System Aims to Enliven Education - The New York Times
Last year, Google introduced Classroom, a free app that teachers can use to create, collect and comment on student assignments. This month, Facebook announced that company engineers were working with Summit Public Schools in California on software to customize learning to individual students.
Google engineers similarly worked with teachers to develop virtual-reality field trips based on course curriculums."