Not 200-300 per week per child.
200-300 per hour....
So usually you will work with a child 3-5 times a week. Every session is an hour.
So going with the minamum...if you are tutoring only 1 child 3 times a week for only 200 pesos an hour you will be making $2,400 pesos a month. Which is next to nothing...but the plan is to be tutoring more than 1 child only 3 times a week...It can add up nicely if you know how to balance your schedule.
(And I guess it adding up "nicely" can be subjective to what style of living you are accustomed to, or expecting.)
In Santo Domingo you can charge more than in POP...and remember to add extra for transportation if they don't pick up up or drop you off.
And the idea of getting a group of kids together works well. Instead of charging 200pesos an hour for one child, charge 100 for a group of 4 kids for 2 hours...twice a week and there you have another 12,800 pesos...
These are just rough ideas...it's up to you how you are able to work it out. But it is possible to make a livable amount off tutoring only.
What sort of teaching certificate do you have?
I don't know of any teaching jobs that would be starting at schools at that time, unless another teacher decides to quit mid-year...
And if you are staying only 6-8 months, you would be leaving in August or October..which is right when the new school year is starting up...
But...maybe some other DR1 members will know of a special position or something that I'm not aware of.
Pay scales for teaching in the DR vary by city, school, your education, your experience, and how long you have been at the school. I think the very very base or minimum pay, for someone who does not have a teaching degree or teaching experience in cities on the North Coast would be between 10,000-16,000pesos a month plus benefits and transportation. In cities like SD, a good school pays usually in USD...and considerably more than that!! Often times they will pay your accommodations as well.