Your student will already have a level based on the Placement or Assessment test. In addition, you can rate your student's performance that class by using the plus and minus buttons.
If your student did particularly well you can send them a 'great work' badge by hitting the 'yes' button.
Fluentify students are assessed during their PLACEMENT and ASSESSMENT tests using a 14-level system; from FL0 (complete beginner) to FL13 (proficient). These levels are based upon CEFR (Common European Framework of Reference for Languages), but broken down into sub-levels.