As you can see many student here in Philippines are studying junior high school. But, we don't know the real purpose of that thing. Many question on our mind haven't yet answer. 

K to 12 and SHS were designed with your best interest in mind.
They are products of years of research, planning, and consultation
that take into account the child, community, content, competencies,
culture, career, and choice. You, the learners, are at the heart
of the SHS curriculum. It recognizes your characteristics, addresses
your needs, and values your personal choices.
An enhanced curriculum was created to give you the best possible
tools and career choices after high school. You may not have
realized it but your existing lessons in recent years have been
modified to get you ready for SHS.
Your teachers have been trained and prepared for K to 12.
You will be part of the K to 12 generation and your teachers,
schools, and education system are ready for this.