Ref. No. 1229/42-542
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
There is an apprehension of evil in this form of tuition. So it should be avoided, but your earning is halal. Now, you had better teach the male students only. Guardians should look for female tutors for their girls. Remember, the door of fitnah must be closed at the initial stage; otherwise the consequences will not be good.
And Allah knows best
Darul Uloom Waqf Deoband