In this age of phone every single person have access to the cell phone. From a student to their guardian everyone have at least one phone. So rather than making call to every single one SMS is the most efficient way of reaching to the guardians of the student, to student and your other staff. It is quick, easy and don't need more man power like in calling.
These phone now the part of our lives every single moment. One will never forget to put his cell in pocket but can forget other things.
Practically everybody including the guardians/staff/gatekeeper/understudies convey cell phone with them. This infers Schools and colleges can reach to watchmen and understudies quickly constantly and in a fiscally sharp way, in case of emergencies, on giving quickly about understudies propel information to gatekeepers, about parent teacher social events, events, events, cost redesigns et cetera, inside no time.
The SMS approach by HawksCool spares time and cash for both guardians and the administration.