At my kids’ IB school, the teacher would assign a letter grade on homework, projects, and tests even those submitted to IB
Some work is then sent to IB and is scored separately, but those individual scores were not shared with students.
After the handful of assignments were submitted and the final IB exam, students received their final score in May. For HL, the final exam would be end of year two. SL would be the end of year one.