People don't expect aspiring accountants to spend their weekends managing their personal finances or imaginary companies in QuickBooks or (shudder) Oracle. If they've got a personal budget spreadsheet, and have done a few studies in school following tutorials with sample data in a few software packages, but frequently refer to the docs and don't know the keyboard shortcuts, that's great for an accountant. You teach an accountant the tools your company uses to apply the basic principles they learned in school.
They haven't spent a whole semester learning Java, they've spent a semester learning about Java. By writing a group project in each of those tools, they prove not that they are ready to start knocking out your Jira tickets on Day 1 - they're not, as your experience and their resume proves - but that they are capable of working on unfamiliar software projects in a group, which is what they should be doing in your company. Take a student who knows how the fundamental function your software performs can be built, and teach them the unique tools your company uses to do that. It only takes a couple thousand hours for someone who knows how to learn to develop good proficiency in your particular stack, and there are so many stacks out there that you can't expect everyone to have invested that in yours.
They haven't spent a whole semester learning Java, they've spent a semester learning about Java. By writing a group project in each of those tools, they prove not that they are ready to start knocking out your Jira tickets on Day 1 - they're not, as your experience and their resume proves - but that they are capable of working on unfamiliar software projects in a group, which is what they should be doing in your company. Take a student who knows how the fundamental function your software performs can be built, and teach them the unique tools your company uses to do that. It only takes a couple thousand hours for someone who knows how to learn to develop good proficiency in your particular stack, and there are so many stacks out there that you can't expect everyone to have invested that in yours.