Every year, thousands of faculty positions in primary and secondary schools go unfilled in the United States. A revolving door of substitutes and uncredentialled employees create a patchwork of support. In order to address this need, the United States issues visas to highly qualified educators from other countries who meet the standards and certifications within a school district.
More information can be found here:
Where Have All the Teachers Gone (Source The Washington Post) September 18, 2017
https://www.washingtonpost.com/news/answer-sheet/wp/2017/09/18/where-have-all-the-teachers-gone/?utm_term=.60ef96b8bc05Problem: Massive Teacher Shortage
Solution: The Philippines (Source NBC News) September 3, 2017
https://www.nbcnews.com/politics/politics-news/problem-massive-teacher-shortage-solution-philippines-n793831