visit visa of children

I just want to ask, if me and my husband have both separate working visa, single status contract, can we bring our 2 kids in saudi arabia thru visit visa? can they stay with us until our contract finish? my eldest is 7 years old can she allowed to study in international schools? if yes, if she arrive in ksa at the middle of school year do we have to wait for the next school year before enrolling? Thank you for those who will answer. I just want to clarify things.

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