Which days these are depends entirely on the state and school district, at least in the US. Districts with a low or no Jewish population aren't likely to take Rosh Hashanah off, etc.
Ha! Districts outside of New York and LA mostly don't grant Rosh ha'Shanah off even if they do have a substantial Jewish population. Employers do similar: Jewish holidays come out of your vacation time because they're not "company holidays" like Christmas.
Just noting, but Massachusetts never really stopped being Puritan. Oy gevalt.
In reality, the Finnish average is more like 27-32 days.
After your second year of work at a company, you get 5 weeks vacation per year. The official number for this is 30 days, but that's counting Saturdays. Nobody works 6 days per week, so in reality this is 25 days.
On top of those 25 days, there are public holidays. On average 7 of them fall on weekdays per year.
This gives us a grand total of 32 days per year on average.