Hello to everyone!

I'm new on this forum but I have a question. I know that for an instructor visa, 3 years of experiences or a degree are somehow required. What about for the Specialist in humanities/International Services visa? Same rules apply?
I finished a technical upper secondary school for early childhood education (qualified to work as an assistant preschool teacher), fluent in English and Italian, and was wondering if I can get a working permit if I find an international preschool/school in Japan to sponsor me?

Thank you and have a nice day,

D.