DESS although the best has LONGGGGG waiting list and is until primary. For me , no harm putting them into the waiting list & pray that you will get a place. To me there are other good ones like Doha College, Parkhouse, Sherbourne & Doha British School which you can consider. Due to personal preference, I have seen parents transferring their kids within these few schools too. Alternatively you let your husband settled here first.. find a school before you guys come over. All schools require entrance exam before they are accepted. So whenever a place becomes available, do prepare to fly them immediately.