Local Goverment School in Latvia

hello All,

I am planning to shift to Latvia with my 12 year old daughter. I wanted to know about the schooling system.
Since i will be shifting from India, English is the only foriegn language we know.
In Local giverment schools, so they teach in English or in Latvian.
Will they first teach my kid latvian language? Who will help in this transition?

Please guide me.

Thanks
Deep Kaur