How much is the tuition fee for the middle school attached to Zhuhai Beijing Normal University?

The middle school attached to Beijing Normal University is public and the whole city is unified. I am registered in Zhuhai, and I have paid more than 900 yuan. I remember that those who are not registered in Zhuhai in our class have to pay more than 1000, and the accommodation fee is free. Maybe every school is different, and there are not many differences.