Hi @jonathan.schirmer Although Gibbon is primarily designed for K-12 schools, it is quite flexible, and I have seen it adapted for other types of schools like music schools and tutoring centres. Here are some links that may help give you some ideas as you get started:
In terms of tracking which students are “trial students”, you could possibly set this up as a different Form Group, as each student can only be in one form group throughout the system, but can be in any number of classes. Form groups are often displayed next to a student’s name in many screens, so you could use this to help track and differentiate your trial students. Student’s form group can be changed through Admissions > Student Enrolment.
You can also change any of the terms used in Gibbon to suit your needs using System Admin > String Replace. In this case, you could perhaps change “Form Group” to “Student type” or something else more descriptive of your purposes.
Since you may not have Year Groups (often called Grades in other school systems), you could use just one year group that all students are part of.
Hope this helps!