Here is a partial list of bi-lingual schools outside of Santo Domingo:

Santa Rosa, Puerto Plata.
Offers Pre-K through Grade 12, located downtown, close to Malecon.
Oldest, and respected school, religious (catholic ) influences.
Spanish Speaking, many foreigners attend this school anyway.
Cost about 2000 RDS/ month, excl. books, uniforms, meals, inscriptions.

Collegio Aventista, Puerto Plata.
Offers Pre-K through Grade 12, located downtown.
Spanish speaking, with about 10 % foreigners attending school.
English and French lessons.
Good reputation.
Cost about 1200 RDS/month, excl. books, uniforms, meals, inscriptions.

Collegio San José, Puerto Plata.
Most respected school in the city, Pre-K through Grade 12.
Only Spanish speaking.
English and French lessons though.
Alots of experiments, outdoor education in combination with the classroom education.
Cost appr. 2.500 RDS /month. Excl. meals, uniforms, books, inscriptions.
Non religious.

Alic New World School, Puerto Plata.
It has Grades Pre-K through Grade 12.
Billingual school, not all teachers are educated, certified teachers though
French lessons offered.
Cost around 2.500 RDS /month, excl. books, uniforms, meals, inscription.

The Garden Kids School, Sosua (Puerto Plata) is for children aged 5 – 11 years (pre-kindergarten to Grade 4).
Website: www.garden-kids.org

The International School of Sosua (Puerto Plata), ISS is accredited by SACS, located in Sosua, and serves the communities of Sosua, Cabarete, and Puerto Plata. It has Grades Pre-K through Grade 12 and offers diploma programmes from both the US and Dominican Republic. Courses are taught in English and teachers are certified in their field.
Website: www.issosua.com

Torre Alta Montessori School, Puerto Plata.
Preschool located in Torre Alta region of Puerto Plata.
1/2 days, billingual.
Cost around 5000 RDS/month excl. meals, diapers etc etc.
Good reputation.

Bautista, Puerto Plata
Small school, close to supermercado Jose Luis.
Only half day, religious ( Evangelico ) and Spanish Speaking.
Quite alots of foreigners put their children here, if they live close by, to allow them to come in to the language and social life.
Cost around 400 RDS/month, excl. books, uniforms (shirts only here ) and inscriptions.

Collegio Isabel, Puerto Plata.
Located close to the firestation.
For children with learning difficulties.
Spanish speaking.
Good reputation.

Pre-school Hermanas Pierret, Puerto Plata.
Located by Parque Luperon downtown.
Solid school with good reputation.
Spanish speaking.

Johns English School, Puerto Plata.
Afternoon/Evening school for the English language.
Located close to the cemetery.
Foreigners and Dominican children, grade 1-9.
Many foreigners have this as a supplement, to keep the English alive and correct.

Collegio Mary Lithgow, Puerto Plata.
Large school on Calle Kennedy downtown.
Offers pre-K through grade 12.
Spanish speaking.
English lessons.
Good reputation, and a few foreigners attending.
Religious influences ( evangelico ).
Cost around 2000 RDS/month excl. books, uniforms, meals, inscriptions.

Escuela De Educación Especial, Puerto Plata
Located by Parque Luperon, in the Victorian building where Arthur Roderick ( architect of Central Park and most Victorian buildings in Puerto Plata ).
School for children with special needs.
Good reputation.