One way to get a raise
...is to get promoted.
And the best way to get promoted is to learn something new and get good at it. Take a course. Learn to sell. Public speaking. Statistics. Become the person that your organization wants in a bigger role. You can accelerate that process with deliberate learning and practice.
Smart companies will pay for it if you ask. After all, it's a high-return investment in the very people who do the work. Organizations have learned that it is significantly cheaper to grow their people than it is to hire pre-grown people from outside.
Many companies that offer tuition reimbursement are frustrated that employees rarely ask for it. Bosses realize how useful this investment is, they're just waiting for you to take them up on it.
It might feel awkward to ask your boss if you can take a course (after all, employees are supposed to be perfect, right?) but in fact, one of the biggest insights that growing companies have is that they're only as good as their smartest people.
And their best people realize that getting smarter is the only way to avoid falling behind...