Like others have said, the degree of technology permitted and a lot of other things vary a lot from one amish community to another.

But in general, most Amish aren’t going to school beyond about 8th grade. Some of them might be getting some sort of vocational training in addition to that but you’re probably going to have a hard time finding any kind of opportunities for Amish higher education.

In general, they tend to get more leeway for using technology as part of their business than for personal use, they might have a computer to help track business expenses, maybe even a business email or have a website for selling their goods online. It’s possible they might even be allowed to have a car or use a tractor for certain purposes.

But as far as just pursuing a math education, that’s probably gonna be a no-go. And if they somehow do permit it, you’re probably gonna need to get by with a pencil, paper, slide rules, etc.