Find inspiration from Leomar Rita Cabarles , 2nd placer in the May 2009 CPA board exam. Like you he came from an "unknown" provincial school. He just graduated this April & took the board this May. BTW, he took an undergrad review at PRTC.
Find inspiration from Reinier Jeffrey Epino Abdon of Phil. Christian University, 6th placer in the same board exam. He reviewed at CTDI-Makati as part of their school's pre-requisite for graduation & at the same time found time to review at CPAR.
Find inspiration from Larianne Kristine Corciega Betancor of Technological Institute of the Phils. - Mla, another 6th placer. He made up for his "weak" foundation by taking multiple reviews, the last one at CPAR where he placed 1st in the final preboard.
These new CPAs came from not so well-known schools, but with long & rigorous preparation while still in college, landed in the top 10 of the May 2009 CPA Board Exam.
There are others in the Top 10 or Top 20 from other batches who came from not so well-known schools. They excelled because they chose to & they put their hearts & minds into their studies. You too can do it. It's a matter of will & determination.