One International School in Dauin is an accredited English school. My boy went there for 2 years of preschool and it met all of our expectations. The cost for a 7 yr. old this past year was about 240,000 pesos annually. They offer, at a cost, a van service from the mall. They are on summer vacation now. Their website is:
oneinternationalschool.com - Welcome
Another school alternative is Don Bosco - St. Louis school, a part of the Don Bosco international program. It is a Catholic school preschool through high school, cost around 30,000 pesos annually.
Another Catholic school next to Don Bosco is Cittidini, around the same cost. Both schools have buses.
Good luck.