Hello, Scott.
We also increased font-size in graders (LAE Grader and standart) in our site. If you don't have access to editing files in your server, you can change it using the custom CSS box in theme's settings.
For example, you can use code below for LAE Grader, standart grader and user report:
.laegradestable {
font-size: 120%;
}
table#user-grades {
font-size: 120%;
}
.user-grade{
font-size: 120%;
}