Change Profile Attribute 'graduation' to 'yearInSchool'

@ryancarlson Right. Understood. This makes perfect sense for stage/prod. However, it creates a bit of an issue for testing.  For example, if I add a table modification, and give it a version after `V1__clean_slate.sql`, then I won't be able to run functional tests because either the database is wiped, or, if I don't fully migrate (so as not to wipe the database), then it doesn't include my new table mod. I haven't (yet) found a way to specify versions to migrate (only up to what version). So, building a local test database will require some on the fly customizations, maybe temporarily deleting `V1__clean_slate.sql` (it would be nice if flyway supported a way to exclude a version, but I haven't seen that if it does).