Ready for K-to-12?

Specifically, are we ready for Grade 11, the first of the two new senior high school years that have been added to the curriculum by virtue of the Enhanced Basic Education Act of 2013? By the start of school year 2016-2017, millions of students across the country who would have otherwise graduated from four years of high school would make up the first batch to enroll in Grade 11. After Grade 12, when they graduate in March 2018, they would constitute the first batch of high school students to finish the K-to-12 program.
What does this mean in practical terms? It means, for one, that by next year, public schools would have to find extra classrooms, restrooms, teachers, textbooks, etc. to accommodate the new Grade 11 population that should have gone on to freshman college studies in the earlier setup, but which would now remain for another two years in the school. The old school system replaced by K-to-12 leaned for decades on the annual turnaround of graduating students to make way for incoming batches from the lower years to use existing school facilities.
This time, the first year of implementation of the added senior high school under K-to-12 gives secondary schools the problem of where to put their Grade 11 classes. The burden is even more acute in public schools, which are mandated by law to carry the extra two years, even as they are more typically deprived of the resources and facilities that private schools enjoy. Private junior high schools, while required to adhere to the minimum requirements of the K-to-12 curriculum, may choose not to offer Grades 11-12, which means their students will either have to find another private school that offers the senior high school years, or enroll in a public high school—further adding to the sudden population bulge in those campuses.
While secondary schools grapple with an excess of students, the