My ears were burning! :-) (See later comment in thread re: scammers and mystery teachers.)
The name is British International School Classic, or BIS Classic for short.
It is a private school with primary and secondary age pupils.
Not all classes are taught in English, but many are. In fact, I'd guess most were taught in Bulgarian. However, there is a big emphasis on English speaking, and the goal is to get students up to CEFR B2 level as soon as possible (but certainly before leaving). Plus, of course, a second foreign language (Chinese, German, Spanish, French). As you'd expect, there are classes to help °µÍø½ûÇøs learn Bulgarian.
As a quick estimate, I'd say 85% of students are Bulgarian, and 15% are from °µÍø½ûÇø families.
The Principal is Miss Reni (Reni LLieva). She's always happy to discuss with parents of potential students.
Curriculum is Bulgarian standard, plus some IGCSEs. The school was recently approved as an International Baccalaureate school, and is now offering the IB Diploma, a well-recognized international qualification.
Fees are very reasonable by Bulgarian standards, and quite surprising by international standards!
There are many students - as you'd expect in a private school - from wealthy Bulgarian families. So perhaps the worst I can say is that a few are a little self-entitled, but that happens in many private schools. However, in general, very nice students with good level of English, and helpful and supportive staff.
I am a real person, but I do have a bit of a "portfolio" career, as I'm a former software engineer & software entrepreneur and I still work (when I can) with early-stage tech ventures. However (as per my Linkedin profile) I have been teaching and tutoring for almost 20 years (albeit as my second career).
I have been in Plovdiv since 2018, and I started teaching at BIS Classic in 2019. My subjects (but I don't teach all at BIS Classic) are Mathematics, Business Studies, IT/ICT (without software engineering), and Computer Science (with software engineering). I have a master's degree in Computer Science, and an MBA from a top-ranked business school. I started (but, sadly, didn't finish) my PhD in Management Research at the University of Oxford. I also have my PGCE in Secondary Mathematics, and the IB teaching certificate for Computer Science. There are many other excellent, well-qualified teachers on the staff, including those with an °µÍø½ûÇø background who have returned to Bulgaria.
So... I'm legit... the school's legit... the students are legit. :-)
And I'll tell Ms. Reni that we need to do better on the website! :-)