Ex-teacher in UAE here. DH not in teaching and has a role where he could work anywhere in the world, but we first moved here for a role with a logistics company that was based here (2018). DC grown up so not here. As a teacher, I would have had 2 free school places in the school I worked in. Bear in mind though, that you could be offered a job in a school that your child cannot attend, or that you would prefer them not to attend. By this I mean a charter school in AD (UAE nationals only, a Ministry of Education school (UAE nationals only) or a school that offers a curriculum you can teach but you don't want for them (perhaps US or IB). So, you've immediately narrowed your options and you're going to cost the school money because your DC are occupying places that paying customers cannot have, which can make single/childless teachers more attractive when recruiting.
Not all companies offer housing, flights and school fees. They will offer medical insurance, which is compulsory here. A poor offer would be visa for DH, medical cover for him, repatriation flights for him. That would mean you'd have to pay for your visa if not working/not covered by school, DC's visas, medical insurance for you and DC, flights for you and DC when leaving for good, plus of course any incidental travel. Some pay relocation expenses such as flights and shipping goods.
As a teacher who is married, the school can offer different employment packages to you than they would offer to single teachers. They may give you salary only as local hire and no benefits, so your DH or his company have to pay for your visa and medical insurance. They would still offer places for DC, if they meet the admissions criteria. A single teacher would have accommodation or an allowance, visa, medical cover, annual flights home, repatriation flight. There's a grey area between the two, and it's at the school's discretion, so sometimes they will have a married teacher on a school visa and provide medical insurance etc.
My DH's benefits include his visa (mine too if needed, but I'm sponsored by my employer instead), annual flights to UK for him and me, medical and dental cover for us both (I could have mine with my employer but his cover is better, so I don't), accommodation allowance and transport allowance. My employer provides my visa and a further accommodation allowance.
The core message here is that there's no such thing as a standard package. I know teachers whose accommodation is a tiny, dark studio barely bigger than a hotel room and others who have a lovely 1 bed apartment in a building where many colleagues also live, with a gym and pool. Teachers usually have to pay for their utility bills in staff accommodation.
It's up to you to see what offers you can get and whether it's worth it, but teacher recruitment for UAE posts is mostly completed between Nov - Feb. Anything available now is due to drop out, unexpected expansion or poor planning. Most advertise on TES but there are a lot of international teacher recruitment agencies too. Definitely don't come here unless you both have jobs though, the chances of DH getting a job once here are very slim.