Jandakot? Try going inland a little. Southern River - has an excellent school (Bletchley Park primary) which is independent, great teachers, good atmosphere. The surrounding area is relatively new, a lot of migrants, who place focus on children and education, so the standard is high, supportive and of good quality. We lived in Harrisdale for a while, and there is a newer primary in the area, but also a high school, and I believe the standards are good there too.
Fremantle is excellent, but perhaps the housing a bit pricey. East Fremantle primary is very good. The rail line from Fremantle opens up a few schools along the line.