tunisian baccalaureat

I am applying to MIT by EA . I got 17.58/20 on the national baccalaureat which is similar to french baccalaureat . I want to know if the tunisian baccalaureat courses are considered like the AP courses ? If not , are they regular or honor courses and shall I mention this in my application to MIT ?
and finally how can I convert my average grade to GPA (weighned or unweighed) ?