I've had two sons go through the High School (NVSHS) and I was really happy with the school. It has great teachers in most of its fields, and in addition to its focus on the academic subjects, its dance program, drama program and sports programs have been first rate. Great musicals too!!
Narangba Valley State High School is rated the second best in QLD apparently. This year they have just gone independent. That is that they will be self governed but remain a State School. My son started there last week. They turn out great student results for university entrance.