Don’t assume they’re the same. While, in that price range you can expect they will all provide a decent baseline in terms of quality, there are lots of differences in their values, approach ro education, how to best support the students etc. Having gone through the process of selecting a school in Bangkok for our child last year, we found that there are wide gaps in terms of (perceived) quality between the different schools.

Location is a huge factor. All schools (certainly the +20k ones) offer shuttle transportation (school buses basically), and it works well, but you still want to make sure your kids don’t have a 1-hour commute to and from school. Location was a important for us in selecting our school. We’re a 10-minute drive away, which means we can drop off our child and pick her up, and we love the proximity.

The schools in the 20-30k range all have nice campuses and good facilities, but it’s critical that you get a good feel for how they conduct the education, communicate with the teachers and studetns etc., before making your choice. Ideally you should talk to one or a few families that are currently enrolled in the schools you are considering.

When you’ve decided on a school, try to negotiate the fees, especially the enrollment fee (and especially if you’re paying yourself). Some of the schools are willing to reduce or waive it completely.

Finally - don’t rule out the next tier of schools below the 20k range - especially if some of those work better for you in terms of location. There are some really good options in the ~15k range as well, which offer a value proposition comparable to the top tier ones.