12 months Japanese for student visa

I wish to study the International Baccalaureate program in Japan. Amongst the requirements for a pre-college student visa application is the minimum 12 months of Japanese study. To add on, the entire IBO curriculum is in English, except for Japanese of course.

I have recently completed 150 hours of intensive Japanese classes which is equivalent to JLPT5. It is a full-time course, every week day in which it took me 2.5 months to complete. The language school I go to also provides the same course in part time once a week, which will take a year to complete.

My question is, in view of the student visa application, usually what level of Japanese proficiency would one need to successfully get a pre-college student visa? Would my situation above be sufficient for a successful visa application?

Some people start from zero knowledge of the Japanese language, and enrol in full-time study (for a year, year and a half, or two years) to get to college entrance level. So I don't think you have to worry about the level of proficiency. But note that it has to be a "full-time" course to make you eligible for a pre-college visa.

there's no precollege visa anymore, it's been consolidated into one "student visa" category.

you don't need any japanese ability to enter a language school

but, for those of you who reach this thread from google, if you are going to be attending any kind of school besides a japanese language school you are going to need at least JLPT1 or 2 in order to pass the school's entrance examination or have their entrance exam waived, plus you will also face an interview with the admissions staff.

Pre-College Student visas were consolidated into the "College Student" visa category, even if you are not a college student.

Generally no language requirement is required, even though there is a section to fill in. Are you just reading the application or have you actually talked to the school in person (or have been in communication with them)?

I highly suggest you contact the school and communicate with them to see what they want you to put down.